diff --git a/frameworks/native/backup_ext/src/ext_extension.cpp b/frameworks/native/backup_ext/src/ext_extension.cpp
index 10feae97b3a229f20b97beec8954ae84e9888be2..e6fda1f77cd1f81529b5355dce80814fae39a840 100644
--- a/frameworks/native/backup_ext/src/ext_extension.cpp
+++ b/frameworks/native/backup_ext/src/ext_extension.cpp
@@ -106,9 +106,7 @@ ErrCode BackupExtExtension::HandleClear()
 
 static ErrCode IndexFileReady(const map<string, pair<string, struct stat>> &pkgInfo, sptr<IService> proxy)
 {
-    string indexFile = string(BConstants::PATH_BUNDLE_BACKUP_HOME).
-                            append(BConstants::SA_BUNDLE_BACKUP_BACKUP).
-                            append(BConstants::EXT_BACKUP_MANAGE);
+    string indexFile = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_BACKUP).append(BConstants::EXT_BACKUP_MANAGE);
     BJsonCachedEntity<BJsonEntityExtManage> cachedEntity(
         UniqueFd(open(indexFile.data(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)));
     auto cache = cachedEntity.Structuralize();
@@ -116,24 +114,26 @@ static ErrCode IndexFileReady(const map<string, pair<string, struct stat>> &pkgI
     cachedEntity.Persist();
     close(cachedEntity.GetFd().Release());
 
+    auto userfile = cache.GetExtManageMap();
+    auto isusertar = userfile.find("isUserTar") != userfile.end();
+
+    if(isusertar == true){
+        HILOGI("The file is a isuserrtar==true");
+    }
+
     ErrCode ret =
         proxy->AppFileReady(string(BConstants::EXT_BACKUP_MANAGE), UniqueFd(open(indexFile.data(), O_RDONLY)));
     if (SUCCEEDED(ret)) {
         HILOGI("The application is packaged successfully");
     } else {
-        HILOGI(
-            "The application is packaged successfully but the AppFileReady interface fails to be invoked: "
-            "%{public}d",
-            ret);
+        HILOGI("The application is packaged successfully but the AppFileReady interface fails to be invoked: ""%{public}d",ret);
     }
     return ret;
 }
 
 static ErrCode BigFileReady(sptr<IService> proxy)
 {
-    string indexFile = string(BConstants::PATH_BUNDLE_BACKUP_HOME).
-                            append(BConstants::SA_BUNDLE_BACKUP_BACKUP).
-                            append(BConstants::EXT_BACKUP_MANAGE);
+    string indexFile = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_BACKUP).append(BConstants::EXT_BACKUP_MANAGE);
     BJsonCachedEntity<BJsonEntityExtManage> cachedEntity(UniqueFd(open(indexFile.data(), O_RDONLY)));
     auto cache = cachedEntity.Structuralize();
     map<string, pair<string, struct stat>> pkgInfo = cache.GetExtManageInfo();
@@ -277,6 +277,7 @@ int BackupExtExtension::DoBackup(const BJsonEntityExtensionConfig &usrConfig)
     string tarName = path + pkgName;
     string root = "/";
 
+   
     // 打包
     auto tarballTar = BTarballFactory::Create("cmdline", tarName);
     (tarballTar->tar)(root, {includes.begin(), includes.end()}, {excludes.begin(), excludes.end()});
@@ -374,6 +375,7 @@ static bool IsAllFileReceived(vector<string> tars)
     BJsonCachedEntity<BJsonEntityExtManage> cachedEntity(UniqueFd(open(indexFile.data(), O_RDONLY)));
     auto cache = cachedEntity.Structuralize();
     set<string> info = cache.GetExtManage();
+    auto infoMap = cache.GetExtManageMap();
 
     // 从数量上判断是否已经全部收到
     if (tars.size() <= info.size()) {
@@ -396,13 +398,16 @@ static void RestoreBigFiles()
     BJsonCachedEntity<BJsonEntityExtManage> cachedEntity(UniqueFd(open(indexFile.data(), O_RDONLY)));
     auto cache = cachedEntity.Structuralize();
     auto info = cache.GetExtManageInfo();
-
+    auto userfile = cache.GetExtManageMap();
+    auto isusertar = userfile.find("isUserTar") != userfile.end();
+    auto isbigfile = userfile.find("isBigFile") != userfile.end();
+    if (isusertar != false && isbigfile != true ) {
+        return;
+    }
     for (auto &item : info) {
-        if (item.first.empty() || item.first.size() < BConstants::BIG_FILE_NAME_SIZE ||
-            item.first.rfind('.') != string::npos) {
+        if (item.first.empty() || item.first.rfind('.') != string::npos) {
             continue;
         }
-
         string fileName = path + item.first;
         auto [filePath, sta] = item.second;
 
@@ -449,13 +454,19 @@ void BackupExtExtension::AsyncTaskRestore()
                 return;
             }
 
-            // 解压
+            string path = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
+            string indexFile = path + string(BConstants::EXT_BACKUP_MANAGE);
+            BJsonCachedEntity<BJsonEntityExtManage> cachedEntity(UniqueFd(open(indexFile.data(), O_RDONLY)));
+            auto cache = cachedEntity.Structuralize();
             int ret = ERR_OK;
             for (auto item : tars) {
-                if (ExtractFileExt(item) == "tar") {
+                auto userfile = cache.GetExtManageMap();
+                auto isusertar = userfile.find("isUserTar") != userfile.end();
+                if (ExtractFileExt(item) == "tar" && isusertar == false) {
                     ret = ptr->DoRestore(item);
                 }
             }
+
             // 恢复大文件
             RestoreBigFiles();
 
diff --git a/utils/include/b_json/b_json_entity_ext_manage.h b/utils/include/b_json/b_json_entity_ext_manage.h
index a322a55900ea9ab0ca08e096d4c4c1306ba09e5c..5cbb7779de22cfc0cbb89cefefa803c7f751205d 100644
--- a/utils/include/b_json/b_json_entity_ext_manage.h
+++ b/utils/include/b_json/b_json_entity_ext_manage.h
@@ -24,6 +24,8 @@
 #include "b_json/b_json_cached_entity.h"
 #include "json/json.h"
 
+#define LEN 2
+
 namespace OHOS::FileManagement::Backup {
 class BJsonEntityExtManage : public BJsonEntity {
 public:
@@ -40,7 +42,7 @@ public:
      * @return std::set<std::string>
      */
     std::set<std::string> GetExtManage() const;
-
+    std::map<std::string, tuple<bool, bool>> GetExtManageMap() const;
     /**
      * @brief 获取索引文件及详细信息
      *
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 d367ff3ffdd37f9bb69b0fa9ebe2bd7a2dbf3d0b..3344c55e290123d51813cf2a93171eb147cb2d4b 100644
--- a/utils/src/b_json/b_json_entity_ext_manage.cpp
+++ b/utils/src/b_json/b_json_entity_ext_manage.cpp
@@ -27,6 +27,33 @@
 namespace OHOS::FileManagement::Backup {
 using namespace std;
 
+bool IsCompressedFile(const string &filePath)
+{
+    size_t lastDotPos = filePath.find_last_of('.');
+    std::string extension = filePath.substr(lastDotPos);
+    if ((extension == ".zip" || extension == ".rar" || extension == ".7z" || extension == ".tar") &&
+        std::count(filePath.begin(), filePath.end(), '/') >= LEN) {
+        size_t pos = filePath.rfind('/');
+        std::string directory = filePath.substr(0, pos);
+        if (directory.find(BConstants::PATH_BUNDLE_BACKUP_HOME.data()) != std::string::npos) {
+            return false;
+        }
+    }
+    return true;
+}
+bool IsBigFile(const string &tarfile)
+{
+    struct stat sta;
+    int ret = stat(tarfile.c_str(), &sta);
+    if (ret != 0) {
+        HILOGE("stat file failed, file:%{public}s", tarfile.c_str());
+    }
+    if (sta.st_size > BConstants::BIG_FILE_BOUNDARY) {
+        return false;
+    }
+    return true;
+}
+
 Json::Value Stat2JsonValue(struct stat sta)
 {
     Json::Value value;
@@ -110,6 +137,9 @@ void BJsonEntityExtManage::SetExtManage(const map<string, pair<string, struct st
         }
         value["information"]["path"] = item->second.first;
         value["information"]["stat"] = Stat2JsonValue(item->second.second);
+        // ??isUserTar??
+        value["isUserTar"] = IsCompressedFile(item->second.first);
+        value["isbigfile"] = IsBigFile(item->second.first);
         set<string> lks = FindLinks(item, index);
         for (const auto &lk : lks) {
             value["hardlinks"].append(lk);
@@ -130,7 +160,7 @@ set<string> BJsonEntityExtManage::GetExtManage() const
         return {};
     }
 
-    set<string> info;
+    set<string> info {};
     for (Json::Value &item : obj_) {
         string fileName = item.isObject() && item.isMember("fileName") && item["fileName"].isString()
                               ? item["fileName"].asString()
@@ -140,6 +170,35 @@ set<string> BJsonEntityExtManage::GetExtManage() const
     return info;
 }
 
+map<string, tuple<bool, bool>> BJsonEntityExtManage::GetExtManageMap() const
+{
+    if (!obj_) {
+        HILOGE("Uninitialized JSon Object reference");
+        return {};
+    }
+    if (!obj_.isArray()) {
+        HILOGE("json object isn't an array");
+        return {};
+    }
+
+    map<string, tuple<bool, bool>> info {};
+    for (Json::Value &item : obj_) {
+        string fileName = item.isObject() && item.isMember("fileName") && item["fileName"].isString()
+                              ? item["fileName"].asString()
+                              : "";
+        bool isUserTar = item.isObject() && item.isMember("isUserTar") && item["isUserTar"].isBool()
+                             ? item["isUserTar"].asBool()
+                             : false;
+        bool isbigfile = item.isObject() && item.isMember("isbigfile") && item["isbigfile"].isBool()
+                             ? item["isbigfile"].asBool()
+                             : false;
+
+        pair<std::string, std::tuple<bool, bool>> infoPair(fileName, std::make_tuple(isUserTar, isbigfile));
+        info.emplace(infoPair);
+    }
+    return info;
+}
+
 map<string, pair<string, struct stat>> BJsonEntityExtManage::GetExtManageInfo() const
 {
     if (!obj_) {