diff --git a/AssetStudioCLI/Exporter.cs b/AssetStudioCLI/Exporter.cs
index 72e2985..3c26296 100644
--- a/AssetStudioCLI/Exporter.cs
+++ b/AssetStudioCLI/Exporter.cs
@@ -10,10 +10,13 @@ namespace AssetStudioCLI
 {
     internal static class Exporter
     {
+        private static readonly HashSet<string> ExportPathHashSet = new HashSet<string>(System.StringComparer.OrdinalIgnoreCase);
+
         private static bool TryExportFile(string dir, AssetItem item, string extension, out string fullPath, string mode = "Export")
         {
             var fileName = FixFileName(item.Text);
             var filenameFormat = CLIOptions.o_filenameFormat.Value;
+            var canOverwrite = CLIOptions.f_overwriteExisting.Value;
             switch (filenameFormat)
             {
                 case FilenameFormat.AssetName_PathID:
@@ -24,17 +27,18 @@ namespace AssetStudioCLI
                     break;
             }
             fullPath = Path.Combine(dir, fileName + extension);
-            if (!File.Exists(fullPath))
+            if (ExportPathHashSet.Add(fullPath))
             {
-                Directory.CreateDirectory(dir);
-                return true;
+                if (CanWrite(fullPath, dir, canOverwrite))
+                {
+                    return true;
+                }
             }
-            if (filenameFormat == FilenameFormat.AssetName)
+            else if (filenameFormat == FilenameFormat.AssetName)
             {
                 fullPath = Path.Combine(dir, fileName + item.UniqueID + extension);
-                if (!File.Exists(fullPath))
+                if (CanWrite(fullPath, dir, canOverwrite))
                 {
-                    Directory.CreateDirectory(dir);
                     return true;
                 }
             }
@@ -42,6 +46,14 @@ namespace AssetStudioCLI
             return false;
         }
 
+        private static bool CanWrite(string fullPath, string dir, bool canOverwrite)
+        {
+            if (!canOverwrite && File.Exists(fullPath))
+                return false;
+            Directory.CreateDirectory(dir);
+            return true;
+        }
+
         private static bool ExportVideoClip(AssetItem item, string exportPath)
         {
             var m_VideoClip = (VideoClip)item.Asset;
@@ -387,5 +399,10 @@ namespace AssetStudioCLI
                 ? Path.GetRandomFileName()
                 : Path.GetInvalidFileNameChars().Aggregate(str, (current, c) => current.Replace(c, '_'));
         }
+
+        public static void ClearHash()
+        {
+            ExportPathHashSet.Clear();
+        }
     }
 }
diff --git a/AssetStudioCLI/Options/CLIOptions.cs b/AssetStudioCLI/Options/CLIOptions.cs
index 1ea1c5e..91a0e56 100644
--- a/AssetStudioCLI/Options/CLIOptions.cs
+++ b/AssetStudioCLI/Options/CLIOptions.cs
@@ -93,6 +93,7 @@ namespace AssetStudioCLI.Options
         public static Option<AssetGroupOption> o_groupAssetsBy;
         public static Option<FilenameFormat> o_filenameFormat;
         public static Option<string> o_outputFolder;
+        public static Option<bool> f_overwriteExisting;
         public static Option<bool> o_displayHelp;
         //logger
         public static Option<LoggerEvent> o_logLevel;
@@ -254,6 +255,15 @@ namespace AssetStudioCLI.Options
                 optionExample: "",
                 optionHelpGroup: HelpGroups.General
             );
+            f_overwriteExisting = new GroupedOption<bool>
+            (
+                optionDefaultValue: false,
+                optionName: "-r, --overwrite-existing",
+                optionDescription: "(Flag) If specified, Studio will overwrite existing files during asset export/dump\n",
+                optionExample: "",
+                optionHelpGroup: HelpGroups.General,
+                isFlag: true
+            );
             o_displayHelp = new GroupedOption<bool>
             (
                 optionDefaultValue: false,
@@ -678,6 +688,11 @@ namespace AssetStudioCLI.Options
 
                 switch (flag)
                 {
+                    case "-r":
+                    case "--overwrite-existing":
+                        f_overwriteExisting.Value = true;
+                        flagIndexes.Add(i);
+                        break;
                     case "--l2d-search-by-filename":
                         if (o_workMode.Value != WorkMode.Live2D)
                         {
@@ -1403,7 +1418,8 @@ namespace AssetStudioCLI.Options
                     if (o_workMode.Value != WorkMode.Info)
                     {
                         sb.AppendLine($"# Asset Group Option: {o_groupAssetsBy}");
-                        sb.AppendLine($"# Filename format: {o_filenameFormat}");
+                        sb.AppendLine($"# Filename Format: {o_filenameFormat}");
+                        sb.AppendLine($"# Overwrite Existing Files: {f_overwriteExisting}");
                     }
                     if (o_workMode.Value == WorkMode.Export)
                     {
diff --git a/AssetStudioCLI/ParallelExporter.cs b/AssetStudioCLI/ParallelExporter.cs
index c66c6d4..75cf504 100644
--- a/AssetStudioCLI/ParallelExporter.cs
+++ b/AssetStudioCLI/ParallelExporter.cs
@@ -10,7 +10,7 @@ namespace AssetStudioCLI
 {
     internal static class ParallelExporter
     {
-        private static ConcurrentDictionary<string, bool> savePathHash = new ConcurrentDictionary<string, bool>();
+        private static readonly ConcurrentDictionary<string, bool> ExportPathDict = new ConcurrentDictionary<string, bool>(StringComparer.OrdinalIgnoreCase);
 
         public static bool ExportTexture2D(AssetItem item, string exportPath, out string debugLog)
         {
@@ -184,6 +184,7 @@ namespace AssetStudioCLI
         {
             var fileName = FixFileName(item.Text);
             var filenameFormat = CLIOptions.o_filenameFormat.Value;
+            var canOverwrite = CLIOptions.f_overwriteExisting.Value;
             switch (filenameFormat)
             {
                 case FilenameFormat.AssetName_PathID:
@@ -194,17 +195,18 @@ namespace AssetStudioCLI
                     break;
             }
             fullPath = Path.Combine(dir, fileName + extension);
-            if (savePathHash.TryAdd(fullPath.ToLower(), true) && !File.Exists(fullPath))
+            if (ExportPathDict.TryAdd(fullPath, true))
             {
-                Directory.CreateDirectory(dir);
-                return true;
+                if (CanWrite(fullPath, dir, canOverwrite))
+                {
+                    return true;
+                }
             }
-            if (filenameFormat == FilenameFormat.AssetName)
+            else if (filenameFormat == FilenameFormat.AssetName)
             {
                 fullPath = Path.Combine(dir, fileName + item.UniqueID + extension);
-                if (!File.Exists(fullPath))
+                if (CanWrite(fullPath, dir, canOverwrite))
                 {
-                    Directory.CreateDirectory(dir);
                     return true;
                 }
             }
@@ -212,6 +214,14 @@ namespace AssetStudioCLI
             return false;
         }
 
+        private static bool CanWrite(string fullPath, string dir, bool canOverwrite)
+        {
+            if (!canOverwrite && File.Exists(fullPath))
+                return false;
+            Directory.CreateDirectory(dir);
+            return true;
+        }
+
         public static bool ParallelExportConvertFile(AssetItem item, string exportPath, out string debugLog)
         {
             switch (item.Type)
@@ -237,7 +247,7 @@ namespace AssetStudioCLI
 
         public static void ClearHash()
         {
-            savePathHash.Clear();
+            ExportPathDict.Clear();
         }
     }
 }
diff --git a/AssetStudioCLI/Studio.cs b/AssetStudioCLI/Studio.cs
index 8f02f15..bc4e733 100644
--- a/AssetStudioCLI/Studio.cs
+++ b/AssetStudioCLI/Studio.cs
@@ -761,6 +761,7 @@ namespace AssetStudioCLI
                 }
                 Console.Write($"Exported [{exportedCount}/{toExportCount}]\r");
             }
+            Exporter.ClearHash();
 
             Parallel.ForEach(toParallelExportAssetDict, new ParallelOptions { MaxDegreeOfParallelism = parallelExportCount }, toExportAsset =>
             {
diff --git a/AssetStudioGUI/ExportOptions.Designer.cs b/AssetStudioGUI/ExportOptions.Designer.cs
index ba488e1..b1da2fc 100644
--- a/AssetStudioGUI/ExportOptions.Designer.cs
+++ b/AssetStudioGUI/ExportOptions.Designer.cs
@@ -82,6 +82,7 @@
             this.exportAllNodes = new System.Windows.Forms.CheckBox();
             this.eulerFilter = new System.Windows.Forms.CheckBox();
             this.optionTooltip = new System.Windows.Forms.ToolTip(this.components);
+            this.overwriteExistingFiles = new System.Windows.Forms.CheckBox();
             this.groupBox1.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.parallelExportUpDown)).BeginInit();
             this.panel1.SuspendLayout();
@@ -96,7 +97,7 @@
             // OKbutton
             // 
             this.OKbutton.BackColor = System.Drawing.SystemColors.ButtonFace;
-            this.OKbutton.Location = new System.Drawing.Point(460, 430);
+            this.OKbutton.Location = new System.Drawing.Point(460, 448);
             this.OKbutton.Name = "OKbutton";
             this.OKbutton.Size = new System.Drawing.Size(75, 23);
             this.OKbutton.TabIndex = 4;
@@ -108,7 +109,7 @@
             // 
             this.Cancel.BackColor = System.Drawing.SystemColors.ButtonFace;
             this.Cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
-            this.Cancel.Location = new System.Drawing.Point(541, 430);
+            this.Cancel.Location = new System.Drawing.Point(541, 448);
             this.Cancel.Name = "Cancel";
             this.Cancel.Size = new System.Drawing.Size(75, 23);
             this.Cancel.TabIndex = 5;
@@ -120,6 +121,7 @@
             // 
             this.groupBox1.AutoSize = true;
             this.groupBox1.BackColor = System.Drawing.SystemColors.Menu;
+            this.groupBox1.Controls.Add(this.overwriteExistingFiles);
             this.groupBox1.Controls.Add(this.parallelExportMaxLabel);
             this.groupBox1.Controls.Add(this.parallelExportCheckBox);
             this.groupBox1.Controls.Add(this.parallelExportUpDown);
@@ -135,7 +137,7 @@
             this.groupBox1.Controls.Add(this.converttexture);
             this.groupBox1.Location = new System.Drawing.Point(12, 13);
             this.groupBox1.Name = "groupBox1";
-            this.groupBox1.Size = new System.Drawing.Size(316, 272);
+            this.groupBox1.Size = new System.Drawing.Size(316, 280);
             this.groupBox1.TabIndex = 1;
             this.groupBox1.TabStop = false;
             this.groupBox1.Text = "Export";
@@ -144,7 +146,7 @@
             // 
             this.parallelExportMaxLabel.AutoSize = true;
             this.parallelExportMaxLabel.ForeColor = System.Drawing.SystemColors.ControlDarkDark;
-            this.parallelExportMaxLabel.Location = new System.Drawing.Point(260, 221);
+            this.parallelExportMaxLabel.Location = new System.Drawing.Point(260, 244);
             this.parallelExportMaxLabel.Name = "parallelExportMaxLabel";
             this.parallelExportMaxLabel.Size = new System.Drawing.Size(33, 13);
             this.parallelExportMaxLabel.TabIndex = 13;
@@ -156,7 +158,7 @@
             this.parallelExportCheckBox.AutoSize = true;
             this.parallelExportCheckBox.Checked = true;
             this.parallelExportCheckBox.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.parallelExportCheckBox.Location = new System.Drawing.Point(6, 219);
+            this.parallelExportCheckBox.Location = new System.Drawing.Point(6, 242);
             this.parallelExportCheckBox.Name = "parallelExportCheckBox";
             this.parallelExportCheckBox.Size = new System.Drawing.Size(203, 17);
             this.parallelExportCheckBox.TabIndex = 11;
@@ -167,7 +169,7 @@
             // 
             // parallelExportUpDown
             // 
-            this.parallelExportUpDown.Location = new System.Drawing.Point(211, 218);
+            this.parallelExportUpDown.Location = new System.Drawing.Point(211, 241);
             this.parallelExportUpDown.Maximum = new decimal(new int[] {
             8,
             0,
@@ -214,7 +216,7 @@
             this.exportSpriteWithAlphaMask.AutoSize = true;
             this.exportSpriteWithAlphaMask.Checked = true;
             this.exportSpriteWithAlphaMask.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.exportSpriteWithAlphaMask.Location = new System.Drawing.Point(6, 150);
+            this.exportSpriteWithAlphaMask.Location = new System.Drawing.Point(6, 173);
             this.exportSpriteWithAlphaMask.Name = "exportSpriteWithAlphaMask";
             this.exportSpriteWithAlphaMask.Size = new System.Drawing.Size(205, 17);
             this.exportSpriteWithAlphaMask.TabIndex = 8;
@@ -226,7 +228,7 @@
             this.openAfterExport.AutoSize = true;
             this.openAfterExport.Checked = true;
             this.openAfterExport.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.openAfterExport.Location = new System.Drawing.Point(6, 196);
+            this.openAfterExport.Location = new System.Drawing.Point(6, 219);
             this.openAfterExport.Name = "openAfterExport";
             this.openAfterExport.Size = new System.Drawing.Size(137, 17);
             this.openAfterExport.TabIndex = 10;
@@ -238,7 +240,7 @@
             this.restoreExtensionName.AutoSize = true;
             this.restoreExtensionName.Checked = true;
             this.restoreExtensionName.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.restoreExtensionName.Location = new System.Drawing.Point(6, 63);
+            this.restoreExtensionName.Location = new System.Drawing.Point(6, 86);
             this.restoreExtensionName.Name = "restoreExtensionName";
             this.restoreExtensionName.Size = new System.Drawing.Size(275, 17);
             this.restoreExtensionName.TabIndex = 5;
@@ -276,7 +278,7 @@
             this.convertAudio.AutoSize = true;
             this.convertAudio.Checked = true;
             this.convertAudio.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.convertAudio.Location = new System.Drawing.Point(6, 173);
+            this.convertAudio.Location = new System.Drawing.Point(6, 196);
             this.convertAudio.Name = "convertAudio";
             this.convertAudio.Size = new System.Drawing.Size(213, 17);
             this.convertAudio.TabIndex = 9;
@@ -290,7 +292,7 @@
             this.panel1.Controls.Add(this.tojpg);
             this.panel1.Controls.Add(this.topng);
             this.panel1.Controls.Add(this.tobmp);
-            this.panel1.Location = new System.Drawing.Point(18, 111);
+            this.panel1.Location = new System.Drawing.Point(18, 134);
             this.panel1.Name = "panel1";
             this.panel1.Size = new System.Drawing.Size(279, 33);
             this.panel1.TabIndex = 7;
@@ -352,7 +354,7 @@
             this.converttexture.AutoSize = true;
             this.converttexture.Checked = true;
             this.converttexture.CheckState = System.Windows.Forms.CheckState.Checked;
-            this.converttexture.Location = new System.Drawing.Point(6, 87);
+            this.converttexture.Location = new System.Drawing.Point(6, 110);
             this.converttexture.Name = "converttexture";
             this.converttexture.Size = new System.Drawing.Size(116, 17);
             this.converttexture.TabIndex = 6;
@@ -368,7 +370,7 @@
             this.l2dGroupBox.Controls.Add(this.l2dMotionExportMethodPanel);
             this.l2dGroupBox.Controls.Add(this.l2dMotionExportMethodLabel);
             this.l2dGroupBox.Controls.Add(this.l2dForceBezierCheckBox);
-            this.l2dGroupBox.Location = new System.Drawing.Point(12, 275);
+            this.l2dGroupBox.Location = new System.Drawing.Point(12, 291);
             this.l2dGroupBox.Name = "l2dGroupBox";
             this.l2dGroupBox.Size = new System.Drawing.Size(316, 149);
             this.l2dGroupBox.TabIndex = 2;
@@ -490,7 +492,7 @@
             this.groupBox2.Controls.Add(this.eulerFilter);
             this.groupBox2.Location = new System.Drawing.Point(328, 13);
             this.groupBox2.Name = "groupBox2";
-            this.groupBox2.Size = new System.Drawing.Size(289, 411);
+            this.groupBox2.Size = new System.Drawing.Size(289, 427);
             this.groupBox2.TabIndex = 3;
             this.groupBox2.TabStop = false;
             this.groupBox2.Text = "Fbx";
@@ -498,7 +500,7 @@
             // fbxResetButton
             // 
             this.fbxResetButton.BackColor = System.Drawing.SystemColors.ButtonFace;
-            this.fbxResetButton.Location = new System.Drawing.Point(208, 368);
+            this.fbxResetButton.Location = new System.Drawing.Point(208, 384);
             this.fbxResetButton.Name = "fbxResetButton";
             this.fbxResetButton.Size = new System.Drawing.Size(75, 23);
             this.fbxResetButton.TabIndex = 21;
@@ -763,6 +765,16 @@
             this.eulerFilter.Text = "EulerFilter";
             this.eulerFilter.UseVisualStyleBackColor = true;
             // 
+            // overwriteExistingFiles
+            // 
+            this.overwriteExistingFiles.AutoSize = true;
+            this.overwriteExistingFiles.Location = new System.Drawing.Point(6, 63);
+            this.overwriteExistingFiles.Name = "overwriteExistingFiles";
+            this.overwriteExistingFiles.Size = new System.Drawing.Size(130, 17);
+            this.overwriteExistingFiles.TabIndex = 14;
+            this.overwriteExistingFiles.Text = "Overwrite existing files";
+            this.overwriteExistingFiles.UseVisualStyleBackColor = true;
+            // 
             // ExportOptions
             // 
             this.AcceptButton = this.OKbutton;
@@ -770,7 +782,7 @@
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.BackColor = System.Drawing.SystemColors.Menu;
             this.CancelButton = this.Cancel;
-            this.ClientSize = new System.Drawing.Size(628, 461);
+            this.ClientSize = new System.Drawing.Size(628, 483);
             this.Controls.Add(this.l2dGroupBox);
             this.Controls.Add(this.groupBox2);
             this.Controls.Add(this.groupBox1);
@@ -856,5 +868,6 @@
         private System.Windows.Forms.ListBox uvTypesListBox;
         private System.Windows.Forms.Label uvBindingsLabel;
         private System.Windows.Forms.Button fbxResetButton;
+        private System.Windows.Forms.CheckBox overwriteExistingFiles;
     }
 }
\ No newline at end of file
diff --git a/AssetStudioGUI/ExportOptions.cs b/AssetStudioGUI/ExportOptions.cs
index 11a519f..835a221 100644
--- a/AssetStudioGUI/ExportOptions.cs
+++ b/AssetStudioGUI/ExportOptions.cs
@@ -15,6 +15,7 @@ namespace AssetStudioGUI
             InitializeComponent();
             assetGroupOptions.SelectedIndex = Properties.Settings.Default.assetGroupOption;
             filenameFormatComboBox.SelectedIndex = Properties.Settings.Default.filenameFormat;
+            overwriteExistingFiles.Checked = Properties.Settings.Default.overwriteExistingFiles;
             restoreExtensionName.Checked = Properties.Settings.Default.restoreExtensionName;
             converttexture.Checked = Properties.Settings.Default.convertTexture;
             exportSpriteWithAlphaMask.Checked = Properties.Settings.Default.exportSpriteWithMask;
@@ -42,6 +43,7 @@ namespace AssetStudioGUI
         {
             Properties.Settings.Default.assetGroupOption = assetGroupOptions.SelectedIndex;
             Properties.Settings.Default.filenameFormat = filenameFormatComboBox.SelectedIndex;
+            Properties.Settings.Default.overwriteExistingFiles = overwriteExistingFiles.Checked;
             Properties.Settings.Default.restoreExtensionName = restoreExtensionName.Checked;
             Properties.Settings.Default.convertTexture = converttexture.Checked;
             Properties.Settings.Default.exportSpriteWithMask = exportSpriteWithAlphaMask.Checked;
diff --git a/AssetStudioGUI/Exporter.cs b/AssetStudioGUI/Exporter.cs
index 2c6446d..b7a6be9 100644
--- a/AssetStudioGUI/Exporter.cs
+++ b/AssetStudioGUI/Exporter.cs
@@ -9,10 +9,13 @@ namespace AssetStudioGUI
 {
     internal static class Exporter
     {
+        private static readonly HashSet<string> ExportPathHashSet = new HashSet<string>(System.StringComparer.OrdinalIgnoreCase);
+
         private static bool TryExportFile(string dir, AssetItem item, string extension, out string fullPath, string mode = "Export")
         {
             var fileName = FixFileName(item.Text);
             var filenameFormatIndex = Properties.Settings.Default.filenameFormat;
+            var canOverwrite = Properties.Settings.Default.overwriteExistingFiles;
             switch (filenameFormatIndex)
             {
                 case 1: //assetName@pathID
@@ -23,17 +26,18 @@ namespace AssetStudioGUI
                     break;
             }
             fullPath = Path.Combine(dir, fileName + extension);
-            if (!File.Exists(fullPath))
+            if (ExportPathHashSet.Add(fullPath))
             {
-                Directory.CreateDirectory(dir);
-                return true;
+                if (CanWrite(fullPath, dir, canOverwrite))
+                {
+                    return true;
+                }
             }
-            if (filenameFormatIndex == 0) //assetName
+            else if (filenameFormatIndex == 0) //assetName
             {
                 fullPath = Path.Combine(dir, fileName + item.UniqueID + extension);
-                if (!File.Exists(fullPath))
+                if (CanWrite(fullPath, dir, canOverwrite))
                 {
-                    Directory.CreateDirectory(dir);
                     return true;
                 }
             }
@@ -41,6 +45,14 @@ namespace AssetStudioGUI
             return false;
         }
 
+        private static bool CanWrite(string fullPath, string dir, bool canOverwrite)
+        {
+            if (!canOverwrite && File.Exists(fullPath)) 
+                return false;
+            Directory.CreateDirectory(dir);
+            return true;
+        }
+
         private static bool ExportVideoClip(AssetItem item, string exportPath)
         {
             var m_VideoClip = (VideoClip)item.Asset;
@@ -349,5 +361,10 @@ namespace AssetStudioGUI
                 ? Path.GetRandomFileName()
                 : Path.GetInvalidFileNameChars().Aggregate(str, (current, c) => current.Replace(c, '_'));
         }
+
+        public static void ClearHash()
+        {
+            ExportPathHashSet.Clear();
+        }
     }
 }
diff --git a/AssetStudioGUI/ParallelExport.cs b/AssetStudioGUI/ParallelExport.cs
index af7fe23..0143d12 100644
--- a/AssetStudioGUI/ParallelExport.cs
+++ b/AssetStudioGUI/ParallelExport.cs
@@ -9,7 +9,7 @@ namespace AssetStudioGUI
 {
     internal static class ParallelExporter
     {
-        private static ConcurrentDictionary<string, bool> savePathHash = new ConcurrentDictionary<string, bool>();
+        private static readonly ConcurrentDictionary<string, bool> ExportPathDict = new ConcurrentDictionary<string, bool>(StringComparer.OrdinalIgnoreCase);
 
         public static bool ExportTexture2D(AssetItem item, string exportPath, out string debugLog)
         {
@@ -183,6 +183,7 @@ namespace AssetStudioGUI
         {
             var fileName = FixFileName(item.Text);
             var filenameFormatIndex = Properties.Settings.Default.filenameFormat;
+            var canOverwrite = Properties.Settings.Default.overwriteExistingFiles;
             switch (filenameFormatIndex)
             {
                 case 1: //assetName@pathID
@@ -193,17 +194,18 @@ namespace AssetStudioGUI
                     break;
             }
             fullPath = Path.Combine(dir, fileName + extension);
-            if (savePathHash.TryAdd(fullPath.ToLower(), true) && !File.Exists(fullPath))
+            if (ExportPathDict.TryAdd(fullPath, true))
             {
-                Directory.CreateDirectory(dir);
-                return true;
+                if (CanWrite(fullPath, dir, canOverwrite))
+                {
+                    return true;
+                }
             }
-            if (filenameFormatIndex == 0) //assetName
+            else if (filenameFormatIndex == 0) //assetName
             {
                 fullPath = Path.Combine(dir, fileName + item.UniqueID + extension);
-                if (!File.Exists(fullPath))
+                if (CanWrite(fullPath, dir, canOverwrite))
                 {
-                    Directory.CreateDirectory(dir);
                     return true;
                 }
             }
@@ -211,6 +213,14 @@ namespace AssetStudioGUI
             return false;
         }
 
+        private static bool CanWrite(string fullPath, string dir, bool canOverwrite)
+        {
+            if (!canOverwrite && File.Exists(fullPath))
+                return false;
+            Directory.CreateDirectory(dir);
+            return true;
+        }
+
         public static bool ParallelExportConvertFile(AssetItem item, string exportPath, out string debugLog)
         {
             switch (item.Type)
@@ -236,7 +246,7 @@ namespace AssetStudioGUI
 
         public static void ClearHash()
         {
-            savePathHash.Clear();
+            ExportPathDict.Clear();
         }
     }
 }
diff --git a/AssetStudioGUI/Properties/Settings.Designer.cs b/AssetStudioGUI/Properties/Settings.Designer.cs
index 7e015d7..65694ad 100644
--- a/AssetStudioGUI/Properties/Settings.Designer.cs
+++ b/AssetStudioGUI/Properties/Settings.Designer.cs
@@ -334,5 +334,17 @@ namespace AssetStudioGUI.Properties {
                 this["decompressToDisk"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("False")]
+        public bool overwriteExistingFiles {
+            get {
+                return ((bool)(this["overwriteExistingFiles"]));
+            }
+            set {
+                this["overwriteExistingFiles"] = value;
+            }
+        }
     }
 }
diff --git a/AssetStudioGUI/Properties/Settings.settings b/AssetStudioGUI/Properties/Settings.settings
index 67f11d6..6ec4ac2 100644
--- a/AssetStudioGUI/Properties/Settings.settings
+++ b/AssetStudioGUI/Properties/Settings.settings
@@ -80,5 +80,8 @@
     <Setting Name="decompressToDisk" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">False</Value>
     </Setting>
+    <Setting Name="overwriteExistingFiles" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/AssetStudioGUI/Studio.cs b/AssetStudioGUI/Studio.cs
index e7c2ec6..c6da6e8 100644
--- a/AssetStudioGUI/Studio.cs
+++ b/AssetStudioGUI/Studio.cs
@@ -677,6 +677,7 @@ namespace AssetStudioGUI
 
                     Progress.Report(++i, toExportCount);
                 }
+                Exporter.ClearHash();
 
                 Parallel.ForEach(toParallelExportAssetDict, new ParallelOptions { MaxDegreeOfParallelism = parallelExportCount }, (toExportAsset, loopState) =>
                 {
@@ -896,7 +897,8 @@ namespace AssetStudioGUI
                         Logger.Info($"Exporting {gameObject.m_Name}");
                         try
                         {
-                            ExportGameObject(gameObject, exportPath, animationList);
+                            var modelExportPath = Path.Combine(exportPath, gameObject.m_Name) + Path.DirectorySeparatorChar;
+                            ExportGameObject(gameObject, modelExportPath, animationList);
                             Logger.Info($"Finished exporting {gameObject.m_Name}");
                         }
                         catch (Exception ex)