diff --git a/kernel/model/index_fix.go b/kernel/model/index_fix.go
index c97647c79..f31fc4327 100644
--- a/kernel/model/index_fix.go
+++ b/kernel/model/index_fix.go
@@ -44,6 +44,8 @@ func FixIndexJob() {
 	task.AppendTask(task.DatabaseIndexFix, removeDuplicateDatabaseIndex)
 	sql.WaitForWritingDatabase()
 
+	task.AppendTask(task.DatabaseIndexFix, resetDuplicateTrees)
+
 	task.AppendTask(task.DatabaseIndexFix, fixBlockTreeByFileSys)
 	sql.WaitForWritingDatabase()
 
@@ -100,6 +102,68 @@ func removeDuplicateDatabaseIndex() {
 	}
 }
 
+// resetDuplicateTrees 重置重复 ID 的文档树。 https://github.com/siyuan-note/siyuan/issues/7340
+func resetDuplicateTrees() {
+	defer logging.Recover()
+
+	autoFixLock.Lock()
+	defer autoFixLock.Unlock()
+
+	util.PushStatusBar(Conf.Language(58))
+	boxes := Conf.GetBoxes()
+	luteEngine := lute.New()
+	for _, box := range boxes {
+		boxPath := filepath.Join(util.DataDir, box.ID)
+		paths := map[string]string{}
+		filepath.Walk(boxPath, func(path string, info os.FileInfo, err error) error {
+			if !info.IsDir() && filepath.Ext(path) == ".sy" && !strings.Contains(filepath.ToSlash(path), "/assets/") {
+				p := path[len(boxPath):]
+				p = filepath.ToSlash(p)
+				paths[p] = path
+			}
+			return nil
+		})
+
+		names := map[string]bool{}
+		duplicatedPaths := map[string]string{}
+		for p, absPath := range paths {
+			name := path.Base(p)
+			if !names[name] {
+				names[name] = true
+				continue
+			}
+
+			duplicatedPaths[p] = absPath
+		}
+
+		for p, absPath := range duplicatedPaths {
+			logging.LogWarnf("exist more than one file with same id [%s], reset it", p)
+
+			tree, loadErr := filesys.LoadTree(box.ID, p, luteEngine)
+			if nil != loadErr {
+				logging.LogWarnf("load tree [%s] failed: %s", p, loadErr)
+				box.moveCorruptedData(absPath)
+				continue
+			}
+
+			resetTree(tree, "Duplicated")
+			createTreeTx(tree)
+			if gulu.File.IsDir(strings.TrimSuffix(absPath, ".sy")) {
+				// 重命名子文档文件夹
+				if renameErr := os.Rename(strings.TrimSuffix(absPath, ".sy"), filepath.Join(filepath.Dir(absPath), tree.ID)); nil != renameErr {
+					logging.LogWarnf("rename [%s] failed: %s", absPath, renameErr)
+					continue
+				}
+			}
+			os.RemoveAll(absPath)
+		}
+
+		if util.IsExiting {
+			break
+		}
+	}
+}
+
 // fixBlockTreeByFileSys 通过文件系统订正块树。
 func fixBlockTreeByFileSys() {
 	defer logging.Recover()