diff --git a/src/Mapster.Tool/ExtensionOptions.cs b/src/Mapster.Tool/ExtensionOptions.cs
index 333987f1..5242b192 100644
--- a/src/Mapster.Tool/ExtensionOptions.cs
+++ b/src/Mapster.Tool/ExtensionOptions.cs
@@ -22,6 +22,9 @@ public class ExtensionOptions
         [Option('b', "baseNamespace", Required = false, HelpText = "Provide base namespace to generate nested output & namespace")]
         public string? BaseNamespace { get; set; }
 
+        [Option('s', "skipExisting", Required = false, HelpText = "Set true to skip generating already existing files")]
+        public bool SkipExistingFiles { get; set; }
+
         [Usage(ApplicationAlias = "dotnet mapster extension")]
         public static IEnumerable<Example> Examples =>
             new List<Example>
diff --git a/src/Mapster.Tool/MapperOptions.cs b/src/Mapster.Tool/MapperOptions.cs
index 534cf69c..689c0c7d 100644
--- a/src/Mapster.Tool/MapperOptions.cs
+++ b/src/Mapster.Tool/MapperOptions.cs
@@ -22,6 +22,9 @@ public class MapperOptions
         [Option('b', "baseNamespace", Required = false, HelpText = "Provide base namespace to generate nested output & namespace")]
         public string? BaseNamespace { get; set; }
 
+        [Option('s', "skipExisting", Required = false, HelpText = "Set true to skip generating already existing files")]
+        public bool SkipExistingFiles { get; set; }
+
         [Usage(ApplicationAlias = "dotnet mapster mapper")]
         public static IEnumerable<Example> Examples =>
             new List<Example>
diff --git a/src/Mapster.Tool/ModelOptions.cs b/src/Mapster.Tool/ModelOptions.cs
index 7548475e..47cf667f 100644
--- a/src/Mapster.Tool/ModelOptions.cs
+++ b/src/Mapster.Tool/ModelOptions.cs
@@ -25,6 +25,9 @@ public class ModelOptions
         [Option('b', "baseNamespace", Required = false, HelpText = "Provide base namespace to generate nested output & namespace")]
         public string? BaseNamespace { get; set; }
 
+        [Option('s', "skipExisting", Required = false, HelpText = "Set true to skip generating already existing files")]
+        public bool SkipExistingFiles { get; set; }
+
         [Usage(ApplicationAlias = "dotnet mapster model")]
         public static IEnumerable<Example> Examples =>
             new List<Example>
diff --git a/src/Mapster.Tool/Program.cs b/src/Mapster.Tool/Program.cs
index 482a78cb..03fa643d 100644
--- a/src/Mapster.Tool/Program.cs
+++ b/src/Mapster.Tool/Program.cs
@@ -83,6 +83,14 @@ private static void GenerateMappers(MapperOptions opt)
                     IsInternal = attr.IsInternal,
                     PrintFullTypeName = opt.PrintFullTypeName,
                 };
+
+                var path = GetOutput(opt.Output, segments, definitions.TypeName);
+                if (opt.SkipExistingFiles && File.Exists(path))
+                {
+                    Console.WriteLine($"Skipped: {type.FullName}. Mapper {definitions.TypeName} already exists.");
+                    continue;
+                }
+
                 var translator = new ExpressionTranslator(definitions);
                 var interfaces = type.GetAllInterfaces();
                 foreach (var @interface in interfaces)
@@ -126,7 +134,6 @@ private static void GenerateMappers(MapperOptions opt)
                 }
 
                 var code = translator.ToString();
-                var path = GetOutput(opt.Output, segments, definitions.TypeName);
                 WriteFile(code, path);
             }
         }
@@ -189,6 +196,14 @@ private static void CreateModel(ModelOptions opt, Type type, AdaptAttributeBuild
                 IsRecordType = opt.IsRecordType,
                 NullableContext = GetTypeNullableContext(type),
             };
+
+            var path = GetOutput(opt.Output, segments, definitions.TypeName);
+            if (opt.SkipExistingFiles && File.Exists(path))
+            {
+                Console.WriteLine($"Skipped: {type.FullName}. Model {definitions.TypeName} already exists.");
+                return;
+            }
+
             var translator = new ExpressionTranslator(definitions);
             var isAdaptTo = attr is AdaptToAttribute;
             var isTwoWays = attr is AdaptTwoWaysAttribute;
@@ -252,7 +267,6 @@ private static void CreateModel(ModelOptions opt, Type type, AdaptAttributeBuild
             }
 
             var code = translator.ToString();
-            var path = GetOutput(opt.Output, segments, definitions.TypeName);
             WriteFile(code, path);
 
             static Type getPropType(MemberInfo mem)
@@ -428,6 +442,14 @@ private static void GenerateExtensions(ExtensionOptions opt)
                     IsInternal = mapperAttr.IsInternal,
                     PrintFullTypeName = opt.PrintFullTypeName,
                 };
+
+                var path = GetOutput(opt.Output, segments, definitions.TypeName);
+                if (opt.SkipExistingFiles && File.Exists(path))
+                {
+                    Console.WriteLine($"Skipped: {type.FullName}. Extension class {definitions.TypeName} already exists.");
+                    continue;
+                }
+
                 var translator = new ExpressionTranslator(definitions);
 
                 foreach (var builder in builders)
@@ -460,7 +482,6 @@ private static void GenerateExtensions(ExtensionOptions opt)
                 }
 
                 var code = translator.ToString();
-                var path = GetOutput(opt.Output, segments, definitions.TypeName);
                 WriteFile(code, path);
             }
         }