diff --git a/packages/vite-plugin-uni/src/index.ts b/packages/vite-plugin-uni/src/index.ts
index eee1c8b2a50e1f2066a5c3d4ff3ec644be694f1a..4d1c3d74a0c7fe9f33363013eb1b91d87a436985 100644
--- a/packages/vite-plugin-uni/src/index.ts
+++ b/packages/vite-plugin-uni/src/index.ts
@@ -1,3 +1,4 @@
+import fs from 'fs'
 import path from 'path'
 import debug from 'debug'
 import type { Plugin, ResolvedConfig, ViteDevServer } from 'vite'
@@ -9,6 +10,7 @@ import legacyPlugin from '@vitejs/plugin-legacy'
 
 import {
   CopyOptions,
+  emptyDir,
   initModuleAlias,
   initPreContext,
   parsePagesJsonOnce,
@@ -67,6 +69,8 @@ export interface VitePluginUniResolvedOptions extends VitePluginUniOptions {
 
 export { runDev, runBuild } from './cli/action'
 
+let isFirst = true
+
 export default function uniPlugin(
   rawOptions: VitePluginUniOptions = {}
 ): Plugin[] {
@@ -181,13 +185,23 @@ export default function uniPlugin(
   }
 
   if (process.env.SOURCEMAP === 'true') {
+    // 清空之前的 sourcemap 目录
+    const sourceMapPath = resolveSourceMapPath()
+    if (isFirst) {
+      // 避免重复清空
+      isFirst = false
+      if (fs.existsSync(sourceMapPath)) {
+        emptyDir(sourceMapPath)
+      }
+    }
+
     plugins.push(
       uniMovePlugin({
         apply: 'build',
         enforce: 'post',
         cwd: process.env.UNI_OUTPUT_DIR,
         pattern: '**/*.js.map',
-        dest: resolveSourceMapPath(),
+        dest: sourceMapPath,
       })
     )
   }
diff --git a/packages/vite-plugin-uni/src/plugins/move.ts b/packages/vite-plugin-uni/src/plugins/move.ts
index 4d8c62eca43a72e16a2eee1b162da1d515d829cd..879f570fcce3daefd3cbde3ad14517403661c385 100644
--- a/packages/vite-plugin-uni/src/plugins/move.ts
+++ b/packages/vite-plugin-uni/src/plugins/move.ts
@@ -38,7 +38,6 @@ export function uniMovePlugin({
             cwd,
           })
           .map((filename) => {
-            fs.removeSync(dest)
             return fs.move(
               path.resolve(cwd, filename),
               path.resolve(dest, filename),