diff --git a/frameworks/native/backup_ext/src/untar_file.cpp b/frameworks/native/backup_ext/src/untar_file.cpp
index f2814d36bb16d5046e0784a70474ab257eecc2cc..4050e8973f5e3e552bf7696cc9f2a896590356da 100644
--- a/frameworks/native/backup_ext/src/untar_file.cpp
+++ b/frameworks/native/backup_ext/src/untar_file.cpp
@@ -155,7 +155,11 @@ void UntarFile::HandleTarBuffer(const string &buff, const string &name, FileStat
         realName = info.longName;
         info.longName.clear();
     }
-    info.fullPath = GenRealPath(rootPath_, realName);
+    if (realName[0] == '/') {
+        info.fullPath = realName.substr(0, realName.length() - 1);
+        return;
+    }
+    info.fullPath = realName;
 }
 
 int UntarFile::ParseTarFile(const string &rootPath)
@@ -236,8 +240,9 @@ int UntarFile::ParseIncrementalTarFile(const string &rootPath)
             HILOGE("Parsing tar file completed, read data count is less then block size.");
             return 0;
         }
+        TarHeader *header = reinterpret_cast<TarHeader *>(buff);
         // two empty continuous block indicate end of file
-        if (IsEmptyBlock(buff)) {
+        if (IsEmptyBlock(buff) && header->typeFlag != GNUTYPE_LONGNAME) {
             char tailBuff[BLOCK_SIZE] = {0};
             size_t tailRead = fread(tailBuff, 1, BLOCK_SIZE, tarFilePtr_);
             if (tailRead == BLOCK_SIZE && IsEmptyBlock(tailBuff)) {
@@ -246,7 +251,6 @@ int UntarFile::ParseIncrementalTarFile(const string &rootPath)
             }
         }
         // check header
-        TarHeader *header = reinterpret_cast<TarHeader *>(buff);
         if (!IsValidTarBlock(*header)) {
             // when split unpack, ftell size is over than file really size [0,READ_BUFF_SIZE]
             if (ftello(tarFilePtr_) > (tarFileSize_ + READ_BUFF_SIZE) || !IsEmptyBlock(buff)) {
@@ -274,6 +278,7 @@ void UntarFile::ParseFileByTypeFlag(char typeFlag, bool &isSkip, FileStatInfo &i
     switch (typeFlag) {
         case REGTYPE:
         case AREGTYPE:
+            info.fullPath = GenRealPath(rootPath_, info.fullPath);
             ParseRegularFile(info, typeFlag, isSkip);
             break;
         case SYMTYPE:
@@ -313,6 +318,7 @@ int UntarFile::ParseIncrementalFileByTypeFlag(char typeFlag, bool &isSkip, FileS
                 }
                 break;
             }
+            info.fullPath = GenRealPath(rootPath_, info.fullPath);
             ParseRegularFile(info, typeFlag, isSkip);
             break;
         case SYMTYPE:
@@ -468,7 +474,8 @@ FILE *UntarFile::CreateFile(string &filePath, mode_t mode, char fileType)
         return f;
     }
 
-    HILOGE("Failed to open file %{public}s, err = %{public}d", filePath.c_str(), errno);
+    uint32_t len = filePath.length();
+    HILOGE("Failed to open file %{public}d, %{public}s, err = %{public}d", len, filePath.c_str(), errno);
     size_t pos = filePath.rfind('/');
     if (pos == string::npos) {
         return nullptr;
diff --git a/tests/unittests/backup_utils/b_json/b_report_entity_test.cpp b/tests/unittests/backup_utils/b_json/b_report_entity_test.cpp
index 40a952afcec1a82908ab6b05639cb3fdab334386..8b702286a1687ecd718815f79d9055bf8f7761d1 100644
--- a/tests/unittests/backup_utils/b_json/b_report_entity_test.cpp
+++ b/tests/unittests/backup_utils/b_json/b_report_entity_test.cpp
@@ -81,7 +81,7 @@ HWTEST_F(BReportEntityTest, b_report_entity_GetReportInfos_0100, testing::ext::T
         unordered_map<string, struct ReportFileInfo> cloudFiles = cloudRp.GetReportInfos();
 
         bool flag = false;
-
+        fileName = fileName.substr(1, fileName.length() - 1);
         EXPECT_EQ(cloudFiles.size(), 1);
         for (auto &item : cloudFiles) {
             if (item.first == fileName) {
diff --git a/utils/src/b_json/b_report_entity.cpp b/utils/src/b_json/b_report_entity.cpp
index 6290f046c199170435028c0a32c6e43bc67a98b3..d2553512a59894d4dc042cace3030d95ca0e6b2c 100644
--- a/utils/src/b_json/b_report_entity.cpp
+++ b/utils/src/b_json/b_report_entity.cpp
@@ -63,14 +63,13 @@ static ErrCode ParseReportInfo(struct ReportFileInfo &fileStat,
                                const unordered_map<string, int> &keys)
 {
     // 根据数据拼接结构体
-    int len = keys.size();
     int splitsLen = (int)splits.size();
     // 处理path路径
     string path;
     vector<string> residue;
     try {
         for (int i = 0; i < splitsLen; i++) {
-            if (i <= splitsLen - len) {
+            if (i <= splitsLen - keys.size()) {
                 path += splits[i] + ";";
             } else {
                 residue.emplace_back(splits[i]);
@@ -80,6 +79,7 @@ static ErrCode ParseReportInfo(struct ReportFileInfo &fileStat,
             HILOGE("Error residue size");
             return EPERM;
         }
+        path = path[0] == '/' ? path.substr(1, path.length() - 1) : path;
         fileStat.filePath = path.substr(0, path.length() - 1);
         if (keys.find(INFO_MODE) != keys.end()) {
             fileStat.mode = residue[keys.find(INFO_MODE)->second];