diff --git a/code/rest/matter_dao.go b/code/rest/matter_dao.go
index 6a0aaea..32865c6 100644
--- a/code/rest/matter_dao.go
+++ b/code/rest/matter_dao.go
@@ -412,23 +412,35 @@ func (this *MatterDao) SizeByPuuidAndUserUuid(matterUuid string, userUuid string
 }
 
 //delete a file from db and disk.
-func (this *MatterDao) Delete(matter *Matter) {
+func (this *MatterDao) Delete(matter *Matter, symbolLinkDir bool, symbolLevel int) {
 
 	// recursive if dir
 	if matter.Dir {
+		stat, _ := os.Lstat(matter.AbsolutePath())
+		if stat.Mode()&os.ModeSymlink > 0 {
+			symbolLinkDir = true
+		}
+		if symbolLinkDir {
+			symbolLevel++
+		}
 		matters := this.FindByPuuidAndUserUuid(matter.Uuid, matter.UserUuid, nil)
 
 		for _, f := range matters {
-			this.Delete(f)
+			this.Delete(f, symbolLinkDir, symbolLevel)
 		}
 
 		//delete from db.
 		db := core.CONTEXT.GetDB().Delete(&matter)
 		this.PanicError(db.Error)
 
-		//delete dir from disk.
-		util.DeleteEmptyDir(matter.AbsolutePath())
-
+		if symbolLinkDir {
+			if symbolLevel == 0 {
+				os.Remove(matter.AbsolutePath())
+			}
+		} else {
+			//delete dir from disk.
+			util.DeleteEmptyDir(matter.AbsolutePath())
+		}
 	} else {
 
 		//delete from db.
@@ -442,11 +454,12 @@ func (this *MatterDao) Delete(matter *Matter) {
 		this.bridgeDao.DeleteByMatterUuid(matter.Uuid)
 
 		//delete from disk.
-		err := os.Remove(matter.AbsolutePath())
-		if err != nil {
-			this.logger.Error("occur error when deleting file. %v", err)
+		if !symbolLinkDir {
+			err := os.Remove(matter.AbsolutePath())
+			if err != nil {
+				this.logger.Error("occur error when deleting file. %v", err)
+			}
 		}
-
 	}
 }
 
diff --git a/code/rest/matter_service.go b/code/rest/matter_service.go
index 8908dfd..c1e88bc 100644
--- a/code/rest/matter_service.go
+++ b/code/rest/matter_service.go
@@ -250,7 +250,7 @@ func (this *MatterService) Delete(request *http.Request, matter *Matter, user *U
 		panic(result.BadRequest("matter cannot be nil"))
 	}
 
-	this.matterDao.Delete(matter)
+	this.matterDao.Delete(matter, false, -1)
 
 	//re compute the size of Route.
 	this.ComputeRouteSize(matter.Puuid, user)
@@ -987,7 +987,7 @@ func (this *MatterService) mirror(request *http.Request, srcPath string, destDir
 
 	this.logger.Info("mirror srcPath = %s destPath = %s", srcPath, destDirMatter.Path)
 
-	if fileStat.IsDir() {
+	if fileStat.IsDir() || (fileStat.Mode()&os.ModeSymlink > 0) {
 
 		//判断当前文件夹下，文件是否已经存在了。
 		srcDirMatter := this.matterDao.FindByUserUuidAndPuuidAndDirAndName(user.Uuid, destDirMatter.Uuid, TRUE, fileStat.Name())
@@ -1231,7 +1231,7 @@ func (this *MatterService) ScanPhysics(request *http.Request, user *User) {
 }
 
 func (this *MatterService) scanPhysicsFolder(request *http.Request, dirInfo os.FileInfo, dirMatter *Matter, user *User) {
-	if !dirInfo.IsDir() {
+	if !dirInfo.IsDir() && !(dirInfo.Mode()&os.ModeSymlink > 0) {
 		return
 	}
 
@@ -1277,7 +1277,7 @@ func (this *MatterService) scanPhysicsFolder(request *http.Request, dirInfo os.F
 
 		} else {
 
-			if fileInfo.IsDir() {
+			if fileInfo.IsDir() || (fileInfo.Mode()&os.ModeSymlink > 0) {
 
 				//create folder.
 				matter = this.createDirectory(request, dirMatter, name, user)
diff --git a/code/tool/util/util_zip.go b/code/tool/util/util_zip.go
index 54199f8..ab13541 100644
--- a/code/tool/util/util_zip.go
+++ b/code/tool/util/util_zip.go
@@ -53,7 +53,7 @@ func Zip(srcPath string, destPath string) error {
 		fileHeader.Name = strings.TrimPrefix(path, baseDirPath)
 
 		// directory need /
-		if fileInfo.IsDir() {
+		if fileInfo.IsDir() || (fileInfo.Mode()&os.ModeSymlink > 0) {
 			fileHeader.Name += "/"
 		}
 
diff --git a/code/tool/webdav/file.go b/code/tool/webdav/file.go
index 1b9dbc3..51cdeaa 100644
--- a/code/tool/webdav/file.go
+++ b/code/tool/webdav/file.go
@@ -203,7 +203,7 @@ func (fs *memFS) walk(op, fullname string, f func(dir *memFSNode, frag string, f
 				Err:  os.ErrNotExist,
 			}
 		}
-		if !child.mode.IsDir() {
+		if !child.mode.IsDir() && !(child.mode&os.ModeSymlink > 0) {
 			return &os.PathError{
 				Op:   op,
 				Path: original,
@@ -468,7 +468,7 @@ func (f *memFileInfo) Name() string       { return f.name }
 func (f *memFileInfo) Size() int64        { return f.size }
 func (f *memFileInfo) Mode() os.FileMode  { return f.mode }
 func (f *memFileInfo) ModTime() time.Time { return f.modTime }
-func (f *memFileInfo) IsDir() bool        { return f.mode.IsDir() }
+func (f *memFileInfo) IsDir() bool        { return f.mode.IsDir() || (f.mode&os.ModeSymlink > 0) }
 func (f *memFileInfo) Sys() interface{}   { return nil }
 
 // A memFile is a File implementation for a memFSNode. It is a per-file (not
@@ -495,7 +495,7 @@ func (f *memFile) Close() error {
 func (f *memFile) Read(p []byte) (int, error) {
 	f.n.mu.Lock()
 	defer f.n.mu.Unlock()
-	if f.n.mode.IsDir() {
+	if f.n.mode.IsDir() || (f.n.mode&os.ModeSymlink > 0) {
 		return 0, os.ErrInvalid
 	}
 	if f.pos >= len(f.n.data) {
@@ -509,7 +509,7 @@ func (f *memFile) Read(p []byte) (int, error) {
 func (f *memFile) Readdir(count int) ([]os.FileInfo, error) {
 	f.n.mu.Lock()
 	defer f.n.mu.Unlock()
-	if !f.n.mode.IsDir() {
+	if !f.n.mode.IsDir() && !(f.n.mode&os.ModeSymlink > 0) {
 		return nil, os.ErrInvalid
 	}
 	old := f.pos
@@ -564,7 +564,7 @@ func (f *memFile) Write(p []byte) (int, error) {
 	f.n.mu.Lock()
 	defer f.n.mu.Unlock()
 
-	if f.n.mode.IsDir() {
+	if f.n.mode.IsDir() || (f.n.mode&os.ModeSymlink > 0) {
 		return 0, os.ErrInvalid
 	}
 	if f.pos < len(f.n.data) {
@@ -693,7 +693,7 @@ func copyFiles(ctx context.Context, fs FileSystem, src, dst string, overwrite bo
 		}
 	}
 
-	if srcStat.IsDir() {
+	if srcStat.IsDir() || (srcStat.Mode()&os.ModeSymlink > 0) {
 		if err := fs.Mkdir(ctx, dst, srcPerm); err != nil {
 			return http.StatusForbidden, err
 		}
@@ -752,12 +752,12 @@ func walkFS(ctx context.Context, fs FileSystem, depth int, name string, info os.
 	// This implementation is based on Walk's code in the standard path/filepath package.
 	err := walkFn(name, info, nil)
 	if err != nil {
-		if info.IsDir() && err == filepath.SkipDir {
+		if (info.IsDir() || (info.Mode()&os.ModeSymlink > 0)) && err == filepath.SkipDir {
 			return nil
 		}
 		return err
 	}
-	if !info.IsDir() || depth == 0 {
+	if (!info.IsDir() && !(info.Mode()&os.ModeSymlink > 0)) || depth == 0 {
 		return nil
 	}
 	if depth == 1 {
@@ -785,7 +785,7 @@ func walkFS(ctx context.Context, fs FileSystem, depth int, name string, info os.
 		} else {
 			err = walkFS(ctx, fs, depth, filename, fileInfo, walkFn)
 			if err != nil {
-				if !fileInfo.IsDir() || err != filepath.SkipDir {
+				if (!fileInfo.IsDir() && !(fileInfo.Mode()&os.ModeSymlink > 0)) || err != filepath.SkipDir {
 					return err
 				}
 			}
diff --git a/code/tool/webdav/file_test.go b/code/tool/webdav/file_test.go
index cba2025..5de8155 100644
--- a/code/tool/webdav/file_test.go
+++ b/code/tool/webdav/file_test.go
@@ -240,7 +240,7 @@ func find(ctx context.Context, ss []string, fs FileSystem, name string) ([]strin
 		return nil, err
 	}
 	ss = append(ss, name)
-	if stat.IsDir() {
+	if stat.IsDir() || (stat.Mode()&os.ModeSymlink > 0) {
 		f, err := fs.OpenFile(ctx, name, os.O_RDONLY, 0)
 		if err != nil {
 			return nil, err
@@ -480,7 +480,7 @@ func testFS(t *testing.T, fs FileSystem) {
 				var stat os.FileInfo
 				fileName := parts[0]
 				if stat, opErr = fs.Stat(ctx, fileName); opErr == nil {
-					if stat.IsDir() {
+					if stat.IsDir() || (stat.Mode()&os.ModeSymlink > 0) {
 						got = "dir"
 					} else {
 						got = strconv.Itoa(int(stat.Size()))
@@ -538,7 +538,7 @@ func TestMemFSRoot(t *testing.T) {
 		if err != nil {
 			t.Fatalf("i=%d: Stat: %v", i, err)
 		}
-		if !stat.IsDir() {
+		if !stat.IsDir() && !(stat.Mode()&os.ModeSymlink > 0) {
 			t.Fatalf("i=%d: Stat.IsDir is false, want true", i)
 		}
 
diff --git a/code/tool/webdav/prop.go b/code/tool/webdav/prop.go
index 8a88360..9d51a73 100644
--- a/code/tool/webdav/prop.go
+++ b/code/tool/webdav/prop.go
@@ -176,7 +176,7 @@ func Props(ctx context.Context, fs FileSystem, ls LockSystem, name string, pname
 	if err != nil {
 		return nil, err
 	}
-	isDir := fi.IsDir()
+	isDir := fi.IsDir() || (fi.Mode()&os.ModeSymlink > 0)
 
 	var deadProps map[xml.Name]Property
 	if dph, ok := f.(DeadPropsHolder); ok {
diff --git a/code/tool/webdav/webdav.go b/code/tool/webdav/webdav.go
index b335a38..5dd211d 100644
--- a/code/tool/webdav/webdav.go
+++ b/code/tool/webdav/webdav.go
@@ -177,7 +177,7 @@ func (h *Handler) handleOptions(w http.ResponseWriter, r *http.Request) (status
 	ctx := r.Context()
 	allow := "OPTIONS, LOCK, PUT, MKCOL"
 	if fi, err := h.FileSystem.Stat(ctx, reqPath); err == nil {
-		if fi.IsDir() {
+		if fi.IsDir() || (fi.Mode()&os.ModeSymlink > 0) {
 			allow = "OPTIONS, LOCK, DELETE, PROPPATCH, COPY, MOVE, UNLOCK, PROPFIND"
 		} else {
 			allow = "OPTIONS, LOCK, GET, HEAD, POST, DELETE, PROPPATCH, COPY, MOVE, UNLOCK, PROPFIND, PUT"
@@ -207,7 +207,7 @@ func (h *Handler) handleGetHeadPost(w http.ResponseWriter, r *http.Request) (sta
 	if err != nil {
 		return http.StatusNotFound, err
 	}
-	if fi.IsDir() {
+	if fi.IsDir() || (fi.Mode()&os.ModeSymlink > 0) {
 		return http.StatusMethodNotAllowed, nil
 	}
 	etag, err := findETag(ctx, h.FileSystem, h.LockSystem, reqPath, fi)
@@ -557,7 +557,7 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request) (status
 			return err
 		}
 		href := path.Join(h.Prefix, reqPath)
-		if href != "/" && info.IsDir() {
+		if href != "/" && (info.IsDir() || (info.Mode()&os.ModeSymlink > 0)) {
 			href += "/"
 		}
 		return mw.write(MakePropstatResponse(href, pstats))