diff --git a/frameworks/native/backup_ext/BUILD.gn b/frameworks/native/backup_ext/BUILD.gn
index eb044ee941024402744b702b845a89ec4965dbec..ee46ddb114a86b628efb0df907affa5e2ce6cb88 100644
--- a/frameworks/native/backup_ext/BUILD.gn
+++ b/frameworks/native/backup_ext/BUILD.gn
@@ -50,6 +50,7 @@ ohos_shared_library("backup_extension_ability_native") {
 
   deps = [
     "${path_backup}/interfaces/inner_api/native/backup_kit_inner:backup_kit_inner",
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_backup}/utils:backup_utils",
     "${path_jsoncpp}:jsoncpp",
   ]
diff --git a/frameworks/native/backup_ext/src/ext_extension.cpp b/frameworks/native/backup_ext/src/ext_extension.cpp
index f3cc2c8bdee3f7a5a8b8f738b10788cdb61be5d5..3fc0430377203a6532b7f648643a9881815f6567 100644
--- a/frameworks/native/backup_ext/src/ext_extension.cpp
+++ b/frameworks/native/backup_ext/src/ext_extension.cpp
@@ -50,6 +50,7 @@
 #include "b_tarball/b_tarball_factory.h"
 #include "filemgmt_libhilog.h"
 #include "hitrace_meter.h"
+#include "sandbox_helper.h"
 #include "service_proxy.h"
 #include "tar_file.h"
 #include "untar_file.h"
@@ -799,10 +800,16 @@ static void RestoreBigFiles(bool appendTargetPath)
             continue;
         }
 
-        string fileName = path + item.hashName;
-        string filePath = appendTargetPath ? (path + item.fileName) : item.fileName;
+        string itemHashName = item.hashName;
+        string itemFileName = item.fileName;
 
-        if (!RestoreBigFilePrecheck(fileName, path, item.hashName, filePath)) {
+        BReportEntity::DecodeReportItem(item.hashName, itemHashName, true);
+        BReportEntity::DecodeReportItem(item.fileName, itemFileName, true);
+
+        string fileName = path + itemHashName;
+        string filePath = appendTargetPath ? (path + itemFileName) : itemFileName;
+
+        if (!RestoreBigFilePrecheck(fileName, path, itemHashName, filePath)) {
             continue;
         }
 
@@ -1340,7 +1347,9 @@ static void WriteFile(const string &filename, const map<string, struct ReportFil
     f << "path;mode;dir;size;mtime;hash;usertar" << endl;
     for (auto item : srcFiles) {
         struct ReportFileInfo info = item.second;
-        string str = item.first + ";" + info.mode + ";" + to_string(info.isDir) + ";" + to_string(info.size);
+        string path;
+        BReportEntity::EncodeReportItem(item.first, path, true);
+        string str = path + ";" + info.mode + ";" + to_string(info.isDir) + ";" + to_string(info.size);
         str += ";" + to_string(info.mtime) + ";" + info.hash + ";" + to_string(info.userTar);
         f << str << endl;
     }
diff --git a/test/fuzztest/backupext_fuzzer/BUILD.gn b/test/fuzztest/backupext_fuzzer/BUILD.gn
index 3024f5a68741162f5843a5d530c0f87afdd07d79..a1eb0bf606dcc855479de6f0961aea736e7d34b0 100644
--- a/test/fuzztest/backupext_fuzzer/BUILD.gn
+++ b/test/fuzztest/backupext_fuzzer/BUILD.gn
@@ -49,6 +49,7 @@ ohos_fuzztest("BackupExtFuzzTest") {
 
   deps = [
     "${path_backup}/interfaces/inner_api/native/backup_kit_inner:backup_kit_inner",
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_backup}/utils:backup_utils",
     "${path_jsoncpp}:jsoncpp",
     "${third_party_path}/bounds_checking_function:libsec_shared",
diff --git a/tests/unittests/backup_ext/BUILD.gn b/tests/unittests/backup_ext/BUILD.gn
index da0bb4a7e3754c1aa31995ef4b8d03101ba2c5cc..4c4945b162436495cf13d089a6e61d7cc3e4023c 100644
--- a/tests/unittests/backup_ext/BUILD.gn
+++ b/tests/unittests/backup_ext/BUILD.gn
@@ -44,6 +44,7 @@ ohos_unittest("tar_file_test") {
 
   deps = [
     "${path_backup}/interfaces/inner_api/native/backup_kit_inner:backup_kit_inner",
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_backup}/tests/utils:backup_test_utils",
     "${path_backup}/utils:backup_utils",
     "${path_googletest}:gmock_main",
@@ -113,6 +114,7 @@ ohos_unittest("untar_file_test") {
 
   deps = [
     "${path_backup}/interfaces/inner_api/native/backup_kit_inner:backup_kit_inner",
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_backup}/tests/utils:backup_test_utils",
     "${path_backup}/utils:backup_utils",
     "${path_googletest}:gmock_main",
diff --git a/tests/unittests/backup_utils/BUILD.gn b/tests/unittests/backup_utils/BUILD.gn
index b67e7a51ed27b84558634b3b19128f96fce3209b..0d80a552513e8a1401f04e0c03ffa9991c618903 100644
--- a/tests/unittests/backup_utils/BUILD.gn
+++ b/tests/unittests/backup_utils/BUILD.gn
@@ -82,6 +82,7 @@ ohos_unittest("b_jsonutil_test") {
   sources = [ "b_jsonutil/b_jsonutil_test.cpp" ]
 
   deps = [
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_backup}/tests/utils:backup_test_utils",
     "${path_backup}/utils/:backup_utils",
     "${path_jsoncpp}:jsoncpp",
diff --git a/utils/BUILD.gn b/utils/BUILD.gn
index 5893b725e7cc772056751d724999d3d651a32bdf..01569fc2a752a6e1d69b769ec841a5de83c2a013 100644
--- a/utils/BUILD.gn
+++ b/utils/BUILD.gn
@@ -120,6 +120,7 @@ ohos_shared_library("backup_utils") {
     ":backup_cxx_cppdeps",
     ":backup_cxx_gen",
     ":backup_cxx_rust",
+    "${path_backup}/interfaces/innerkits/native:sandbox_helper_native",
     "${path_jsoncpp}:jsoncpp",
     "//third_party/openssl:libcrypto_shared",
   ]
diff --git a/utils/include/b_json/b_report_entity.h b/utils/include/b_json/b_report_entity.h
index 7756f3e9eb007a7c191958106238840d8213ee19..8e7c83579af499e34e6a1386efc84746fa699df0 100644
--- a/utils/include/b_json/b_report_entity.h
+++ b/utils/include/b_json/b_report_entity.h
@@ -44,6 +44,16 @@ public:
      */
     std::unordered_map<std::string, struct ReportFileInfo> GetReportInfos();
 
+    /**
+     * @brief encode report item
+     */
+    static void EncodeReportItem(const std::string &reportItem, std::string& encodeItem, bool enableEncode);
+
+    /**
+     * @brief decode report item
+     */
+    static void DecodeReportItem(const std::string &reportItem, std::string& decodeItem, bool enableEncode);
+
 public:
     /**
      * @brief 构造方法
diff --git a/utils/src/b_json/b_report_entity.cpp b/utils/src/b_json/b_report_entity.cpp
index 02fbb3c68cec1b3f66862ae3f9a008af725de97d..1551cff2570644c014ec4e1c37d1e6ed8f21312a 100644
--- a/utils/src/b_json/b_report_entity.cpp
+++ b/utils/src/b_json/b_report_entity.cpp
@@ -23,6 +23,7 @@
 
 #include "b_error/b_error.h"
 #include "filemgmt_libhilog.h"
+#include "sandbox_helper.h"
 #include "unique_fd.h"
 
 namespace OHOS::FileManagement::Backup {
@@ -80,7 +81,7 @@ static ErrCode ParseReportInfo(struct ReportFileInfo &fileStat,
             return EPERM;
         }
         path = (path.length() > 0 && path[0] == '/') ? path.substr(1, path.length() - 1) : path;
-        fileStat.filePath = path.substr(0, path.length() - 1);
+        BReportEntity::DecodeReportItem(path.substr(0, path.length() - 1), fileStat.filePath, true);
         if (keys.find(INFO_MODE) != keys.end()) {
             fileStat.mode = residue[keys.find(INFO_MODE)->second];
         }
@@ -169,4 +170,23 @@ unordered_map<string, struct ReportFileInfo> BReportEntity::GetReportInfos()
 
     return infos;
 }
+
+void BReportEntity::EncodeReportItem(const string &reportItem, string& encodeItem, bool enableEncode)
+{
+    if (enableEncode) {
+        encodeItem = AppFileService::SandboxHelper::Encode(reportItem);
+    } else {
+        encodeItem = reportItem;
+    }
+}
+
+void BReportEntity::DecodeReportItem(const string &reportItem, string& decodeItem, bool enableEncode)
+{
+    if (enableEncode) {
+        decodeItem = AppFileService::SandboxHelper::Decode(reportItem);
+    } else {
+        decodeItem = reportItem;
+    }
+}
+
 } // namespace OHOS::FileManagement::Backup
\ No newline at end of file