diff --git a/frameworks/native/backup_ext/src/ext_extension.cpp b/frameworks/native/backup_ext/src/ext_extension.cpp
index 987333bb3086a03a12a291bfe6004b1c08dbf85c..3c4ec575cc98227b1be7e5ad2dad099551d4086b 100644
--- a/frameworks/native/backup_ext/src/ext_extension.cpp
+++ b/frameworks/native/backup_ext/src/ext_extension.cpp
@@ -70,6 +70,17 @@ void BackupExtExtension::VerifyCaller()
     }
 }
 
+static string GenerateHashForFileName(const string &fName)
+{
+    ostringstream strHex;
+    strHex << hex;
+
+    hash<string> strHash;
+    size_t szHash = strHash(fName);
+    strHex << setfill('0') << setw(BConstants::BIG_FILE_NAME_SIZE) << szHash;
+    return strHex.str();
+}
+
 UniqueFd BackupExtExtension::GetFileHandle(const string &fileName)
 {
     try {
@@ -80,10 +91,6 @@ UniqueFd BackupExtExtension::GetFileHandle(const string &fileName)
 
         VerifyCaller();
 
-        if (fileName.find('/') != string::npos) {
-            throw BError(BError::Codes::EXT_INVAL_ARG, "Filename is not valid");
-        }
-
         string path = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
         if (mkdir(path.data(), S_IRWXU) && errno != EEXIST) {
             string str = string("Failed to create restore folder. ").append(std::generic_category().message(errno));
@@ -91,6 +98,16 @@ UniqueFd BackupExtExtension::GetFileHandle(const string &fileName)
         }
 
         string tarName = path + fileName;
+
+        // 带路径的文件名在这里转换为hash值
+        if (fileName.find("4267f03b") != string::npos) {
+            HILOGI("GetFileHandle: fileName include path symbol, need to make hash.");
+            tarName = path + GenerateHashForFileName(fileName);
+        } else if (fileName.find("ce3b17d2") != string::npos) {
+            HILOGI("GetFileHandle: fileName include path symbol, need to make hash.");
+            tarName = path + GenerateHashForFileName(fileName);
+        }
+
         if (access(tarName.c_str(), F_OK) == 0) {
             throw BError(BError::Codes::EXT_INVAL_ARG, string("The file already exists"));
         }
@@ -199,6 +216,11 @@ ErrCode BackupExtExtension::PublishFile(const string &fileName)
 
         string path = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
         string tarName = path + fileName;
+        // 带路径的文件名在这里转换为hash值
+        if (fileName.find("4267f03b") != string::npos) {
+            HILOGI("PublishFile: fileName include path symbol, need to make hash.");
+            tarName = path + GenerateHashForFileName(fileName);
+        }
         {
             BExcepUltils::VerifyPath(tarName, true);
             unique_lock<shared_mutex> lock(lock_);
@@ -345,13 +367,28 @@ int BackupExtExtension::DoRestore(const string &fileName)
     if (extension_->GetExtensionAction() != BConstants::ExtensionAction::RESTORE) {
         return EPERM;
     }
-    // REM: 给定version
-    // REM: 解压启动Extension时即挂载好的备份目录中的数据
     string path = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
-    string tarName = path + fileName;
-    UntarFile::GetInstance().UnPacket(tarName, "/");
+    // 带路径的文件名在这里转换为hash值
+    if (fileName.find("ce3b17d2") != string::npos) {
+        HILOGI("DoRestore: fileName include path symbol, need to make hash.");
+        String filePath = path + GenerateHashForFileName(fileName);;
+        size_t pos = filePath.rfind('/');
+        if (pos == string::npos) {
+            return EPERM;
+        }
+        string folderPath = filePath.substr(0, pos);
+        if (!ForceCreateDirectory(folderPath.data())) {
+            HILOGE("Failed to create directory");
+            return EPERM;
+        }
+        UntarFile::GetInstance().UnPacket(filePath, path);
+    } else {
+        // REM: 给定version
+        // REM: 解压启动Extension时即挂载好的备份目录中的数据
+        string tarName = path + fileName;
+        UntarFile::GetInstance().UnPacket(tarName, "/");
+    }
     HILOGI("Application recovered successfully, package path is %{public}s", tarName.c_str());
-
     return ERR_OK;
 }
 
@@ -410,6 +447,14 @@ static void RestoreBigFiles()
         string filePath = item.fileName;
         struct stat sta = item.sta;
 
+        // 带路径的文件名在这里转换为hash值
+        bool includePath = false;
+        if (item.hashName.find("4267f03b") != string::npos) {
+            HILOGI("RestoreBigFiles: fileName include path symbol, need to make hash.");
+            fileName = path + GenerateHashForFileName(item.hashName);;
+            includePath = true;
+        }
+
         if (access(fileName.data(), F_OK) != 0) {
             HILOGI("file does not exist");
             continue;
@@ -418,6 +463,19 @@ static void RestoreBigFiles()
             HILOGE("file path is empty. %{public}s", filePath.c_str());
             continue;
         }
+
+        if (includePath) {
+            size_t pos = filePath.rfind('/');
+            if (pos == string::npos) {
+                continue;
+            }
+            string folderPath = "/" + filePath.substr(0, pos);
+            if (!ForceCreateDirectory(folderPath.data())) {
+                HILOGE("Failed to create directory");
+                continue;
+            }
+        }
+
         if (!BFile::CopyFile(fileName, filePath)) {
             HILOGE("failed to copy the file. err = %{public}d", errno);
             continue;
diff --git a/services/backup_sa/src/module_ipc/service.cpp b/services/backup_sa/src/module_ipc/service.cpp
index 937146137211e0a1781b5604f962f71c147f19d0..93d5c85dcd5a68f5edade60424099b291d065863 100644
--- a/services/backup_sa/src/module_ipc/service.cpp
+++ b/services/backup_sa/src/module_ipc/service.cpp
@@ -353,9 +353,6 @@ ErrCode Service::PublishFile(const BFileInfo &fileInfo)
             sched_->Sched(fileInfo.owner);
             return BError(BError::Codes::OK);
         }
-        if (fileInfo.fileName.find('/') != string::npos) {
-            throw BError(BError::Codes::SA_INVAL_ARG, "Filename is not valid");
-        }
 
         auto backUpConnection = session_->GetExtConnection(fileInfo.owner);
 
@@ -513,9 +510,6 @@ ErrCode Service::GetFileHandle(const string &bundleName, const string &fileName)
             }
             return BError(BError::Codes::OK);
         }
-        if (fileName.find('/') != string::npos) {
-            throw BError(BError::Codes::SA_INVAL_ARG, "Filename is not valid");
-        }
         auto action = session_->GetServiceSchedAction(bundleName);
         if (action == BConstants::ServiceSchedAction::RUNNING) {
             auto backUpConnection = session_->GetExtConnection(bundleName);
diff --git a/utils/src/b_filesystem/b_file.cpp b/utils/src/b_filesystem/b_file.cpp
index aa8c36370bb37ad061fcfa33c833b2645cc42382..afd84fd605fadd64e6714be1cac1008b7c0e809a 100644
--- a/utils/src/b_filesystem/b_file.cpp
+++ b/utils/src/b_filesystem/b_file.cpp
@@ -113,6 +113,7 @@ bool BFile::CopyFile(const string &from, const string &to)
         if (!dir) {
             throw BError(errno);
         }
+        HILOGI("!!!!!!!!!!!!realpath for %{public}s", dir.get());
         if (!realpath(dirname(dir.get()), resolvedPath.get())) {
             HILOGI("failed to real path for %{public}s", to.c_str());
             return false;