diff --git a/internal/caches/list_file.go b/internal/caches/list_file.go
index b2c887e..c5d454b 100644
--- a/internal/caches/list_file.go
+++ b/internal/caches/list_file.go
@@ -379,6 +379,15 @@ func (this *FileList) GetDB(hash string) *FileListDB {
 	return this.dbList[fnv.HashString(hash)%CountFileDB]
 }
 
+func (this *FileList) HashMapIsLoaded() bool {
+	for _, db := range this.dbList {
+		if !db.HashMapIsLoaded() {
+			return false
+		}
+	}
+	return true
+}
+
 func (this *FileList) remove(hash string) (notFound bool, err error) {
 	var db = this.GetDB(hash)
 
diff --git a/internal/caches/storage_file.go b/internal/caches/storage_file.go
index 328703a..78d3a69 100644
--- a/internal/caches/storage_file.go
+++ b/internal/caches/storage_file.go
@@ -1534,6 +1534,10 @@ func (this *FileStorage) subDir(hash string) (dirPath string, dirIsFull bool) {
 // ScanGarbageCaches 清理目录中“失联”的缓存文件
 // “失联”为不在HashMap中的文件
 func (this *FileStorage) ScanGarbageCaches(fileCallback func(path string) error) error {
+	if !this.list.(*FileList).HashMapIsLoaded() {
+		return errors.New("cache list is loading")
+	}
+
 	var mainDir = this.options.Dir
 	var allDirs = []string{mainDir}
 	var subDirs = this.subDirs // copy