diff --git a/utils/src/b_json/b_json_entity_ext_manage.cpp b/utils/src/b_json/b_json_entity_ext_manage.cpp
index c136a935872de69d4a638e38503687a561a23e8a..28a19d3acc09b57a82d23a1349602057e5b08847 100644
--- a/utils/src/b_json/b_json_entity_ext_manage.cpp
+++ b/utils/src/b_json/b_json_entity_ext_manage.cpp
@@ -46,6 +46,35 @@ static bool CheckBigFile(const string &tarFile)
     return false;
 }
 
+/**
+ * @brief 判断是否属于自身打包的文件
+ *
+ * @param fileName
+ */
+static bool CheckOwnPackTar(const string &fileName)
+{
+    HILOGI("CheckOwnPackTar fileName:%{public}s", fileName.data());
+    if (access(fileName.c_str(), F_OK) != 0) {
+        HILOGI("file does not exists");
+        return false;
+    }
+    // 如果不是在默认路径下的文件包，不属于自身打包的tar文件
+    string::size_type pathPos = fileName.find("/data/storage/el2/backup/backup/");
+    if (pathPos == string::npos || pathPos != 0) {
+        return false;
+    }
+    // 获取tar包名称
+    string tarFile = ExtractFileName(fileName);
+    string::size_type pos = tarFile.find(".");
+    if (pos == string::npos) {
+        return false;
+    }
+
+    string firstName = string(tarFile).substr(0, pos);
+
+    return (firstName == "part") && (ExtractFileExt(tarFile) == "tar");
+}
+
 static bool CheckUserTar(const string &fileName)
 {
     if (access(fileName.c_str(), F_OK) != 0) {
@@ -142,7 +171,7 @@ void BJsonEntityExtManage::SetExtManage(const map<string, tuple<string, struct s
         value["information"]["path"] = path;
         value["information"]["stat"] = Stat2JsonValue(sta);
         value["isUserTar"] = isBeforeTar && CheckUserTar(path);
-        value["isBigFile"] = CheckBigFile(path);
+        value["isBigFile"] = !CheckOwnPackTar(path) && CheckBigFile(path);
         set<string> lks = FindLinks(item, index);
         for (const auto &lk : lks) {
             value["hardlinks"].append(lk);