diff --git a/kernel/model/import.go b/kernel/model/import.go
index 2edcd3be4..ddafbb75f 100644
--- a/kernel/model/import.go
+++ b/kernel/model/import.go
@@ -393,7 +393,7 @@ func ImportSY(zipPath, boxID, toPath string) (err error) {
 			continue
 		}
 
-		treenode.IndexBlockTree(tree)
+		treenode.ReindexBlockTree(tree)
 		sql.UpsertTreeQueue(tree)
 	}
 
diff --git a/kernel/model/index.go b/kernel/model/index.go
index 1d8a14bdd..db13ac337 100644
--- a/kernel/model/index.go
+++ b/kernel/model/index.go
@@ -86,11 +86,13 @@ func index(boxID string) {
 			updated := util.TimeFromID(tree.Root.ID)
 			tree.Root.SetIALAttr("updated", updated)
 			docIAL["updated"] = updated
-			writeJSONQueue(tree)
+			if writeErr := filesys.WriteTree(tree); nil != writeErr {
+				logging.LogErrorf("write tree [%s] failed: %s", tree.Path, writeErr)
+			}
 		}
 
 		cache.PutDocIAL(file.path, docIAL)
-		treenode.IndexBlockTree(tree)
+		treenode.ReindexBlockTree(tree)
 		sql.UpsertTreeQueue(tree)
 
 		util.IncBootProgress(bootProgressPart, fmt.Sprintf(Conf.Language(92), util.ShortPathForBootingDisplay(tree.Path)))
diff --git a/kernel/treenode/blocktree.go b/kernel/treenode/blocktree.go
index 0f0f69787..67df96687 100644
--- a/kernel/treenode/blocktree.go
+++ b/kernel/treenode/blocktree.go
@@ -320,28 +320,6 @@ func ReindexBlockTree(tree *parse.Tree) {
 	blockTreesChanged = true
 }
 
-func IndexBlockTree(tree *parse.Tree) {
-	blockTreesLock.Lock()
-	defer blockTreesLock.Unlock()
-
-	ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
-		if !entering || !n.IsBlock() {
-			return ast.WalkContinue
-		}
-		var parentID string
-		if nil != n.Parent {
-			parentID = n.Parent.ID
-		}
-		if "" == n.ID {
-			return ast.WalkContinue
-		}
-		blockTrees[n.ID] = &BlockTree{ID: n.ID, ParentID: parentID, RootID: tree.ID, BoxID: tree.Box, Path: tree.Path, HPath: tree.HPath, Updated: tree.Root.IALAttr("updated")}
-		return ast.WalkContinue
-	})
-
-	// 新建索引不变更持久化文件，调用处会负责调用 SaveBlockTree()
-}
-
 func AutoFlushBlockTree() {
 	for {
 		SaveBlockTree(false)