diff --git a/app/src/menus/util.ts b/app/src/menus/util.ts
index ff1145026..1c572cbaa 100644
--- a/app/src/menus/util.ts
+++ b/app/src/menus/util.ts
@@ -16,7 +16,7 @@ export const exportAsset = (src: string) => {
                 properties: ["showOverwriteConfirmation"],
             }).then((result: SaveDialogReturnValue) => {
                 if (!result.canceled) {
-                    fetchPost("/api/file/saveAs", {src, targe: result.filePath})
+                    fetchPost("/api/file/copyFile", {src, dest: result.filePath})
                 }
             });
         }
diff --git a/kernel/api/file.go b/kernel/api/file.go
index aaa6d7868..ae58958a7 100644
--- a/kernel/api/file.go
+++ b/kernel/api/file.go
@@ -34,6 +34,51 @@ import (
 	"github.com/siyuan-note/siyuan/kernel/util"
 )
 
+func copyFile(c *gin.Context) {
+	ret := gulu.Ret.NewResult()
+	defer c.JSON(http.StatusOK, ret)
+
+	arg, ok := util.JsonArg(c, ret)
+	if !ok {
+		return
+	}
+
+	src := arg["src"].(string)
+	src, err := model.GetAssetAbsPath(src)
+	if nil != err {
+		logging.LogErrorf("get asset [%s] abs path failed: %s", src, err)
+		ret.Code = -1
+		ret.Msg = err.Error()
+		ret.Data = map[string]interface{}{"closeTimeout": 5000}
+		return
+	}
+
+	info, err := os.Stat(src)
+	if nil != err {
+		logging.LogErrorf("stat [%s] failed: %s", src, err)
+		ret.Code = -1
+		ret.Msg = err.Error()
+		ret.Data = map[string]interface{}{"closeTimeout": 5000}
+		return
+	}
+
+	if info.IsDir() {
+		ret.Code = -1
+		ret.Msg = "file is a directory"
+		ret.Data = map[string]interface{}{"closeTimeout": 5000}
+		return
+	}
+
+	dest := arg["dest"].(string)
+	if err = gulu.File.CopyFile(src, dest); nil != err {
+		logging.LogErrorf("copy file [%s] to [%s] failed: %s", src, dest, err)
+		ret.Code = -1
+		ret.Msg = err.Error()
+		ret.Data = map[string]interface{}{"closeTimeout": 5000}
+		return
+	}
+}
+
 func getFile(c *gin.Context) {
 	ret := gulu.Ret.NewResult()
 	arg, ok := util.JsonArg(c, ret)
diff --git a/kernel/api/router.go b/kernel/api/router.go
index 9ce22d7a3..e21c8d5d4 100644
--- a/kernel/api/router.go
+++ b/kernel/api/router.go
@@ -147,6 +147,7 @@ func ServeAPI(ginServer *gin.Engine) {
 
 	ginServer.Handle("POST", "/api/file/getFile", model.CheckAuth, getFile)
 	ginServer.Handle("POST", "/api/file/putFile", model.CheckAuth, putFile)
+	ginServer.Handle("POST", "/api/file/copyFile", model.CheckAuth, copyFile)
 
 	ginServer.Handle("POST", "/api/ref/refreshBacklink", model.CheckAuth, refreshBacklink)
 	ginServer.Handle("POST", "/api/ref/getBacklink", model.CheckAuth, getBacklink)