diff --git a/download/dfx/dump/dump_service_impl.cpp b/download/dfx/dump/dump_service_impl.cpp
index 1a29846..fe4d0f4 100644
--- a/download/dfx/dump/dump_service_impl.cpp
+++ b/download/dfx/dump/dump_service_impl.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -13,7 +13,6 @@
  * limitations under the License.
  */
 
-
 #include <cstdio>
 #include <string>
 #include <vector>
@@ -44,7 +43,7 @@ DumpServiceImpl &DumpServiceImpl::GetInstance()
     return instance;
 }
 
-DumperType DumpServiceImpl::GetDumperType(const std::string &cmd)
+DumperType DumpServiceImpl::GetDumperType(const std::string &cmd) const
 {
     if (cmd == "-h") {
         return HELP_DUMPER;
@@ -68,7 +67,7 @@ int DumpServiceImpl::Dump(int fd, const std::vector<std::string> &args)
         return 0;
     }
 
-    DumperFactoryMap::iterator it = dumperFactoryMap_.find(dumperType);
+    DumperFactoryMap::const_iterator it = dumperFactoryMap_.find(dumperType);
     if (it == dumperFactoryMap_.end()) {
         dprintf(fd, "invalid arg\n");
         return 0;
@@ -82,7 +81,7 @@ int DumpServiceImpl::Dump(int fd, const std::vector<std::string> &args)
     return 0;
 }
 
-void DumpServiceImpl::DumpHelp(int fd)
+void DumpServiceImpl::DumpHelp(int fd) const
 {
     constexpr const char *DEFAULT_HELPER =
         "usage:\n"
diff --git a/download/dfx/dump/dump_service_impl.h b/download/dfx/dump/dump_service_impl.h
index c9705ef..232187c 100644
--- a/download/dfx/dump/dump_service_impl.h
+++ b/download/dfx/dump/dump_service_impl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -39,8 +39,8 @@ private:
     DumpServiceImpl &operator=(DumpServiceImpl &&) = delete;
 
     void InitDumperFactoryMap();
-    void DumpHelp(int fd);
-    DumperType GetDumperType(const std::string &cmd);
+    void DumpHelp(int fd) const;
+    DumperType GetDumperType(const std::string &cmd) const;
 private:
     using DumperFactoryMap = std::map<DumperType, std::shared_ptr<DumperFactory>>;
     DumperFactoryMap dumperFactoryMap_;
diff --git a/download/dfx/dump/dump_task_info.cpp b/download/dfx/dump/dump_task_info.cpp
index bb3b4b8..544e32a 100644
--- a/download/dfx/dump/dump_task_info.cpp
+++ b/download/dfx/dump/dump_task_info.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -20,7 +20,7 @@
 namespace OHOS::Request::Download {
 bool DumpTaskInfo::Dump(int fd, const std::vector<std::string> &args)
 {
-    int32_t argsNum = args.size();
+    uint32_t argsNum = args.size();
     if (argsNum > 1) {
         dprintf(fd, "too many args, -t accept no arg or one arg \n");
         return false;
@@ -35,7 +35,7 @@ bool DumpTaskInfo::Dump(int fd, const std::vector<std::string> &args)
     return true;
 }
 
-void DumpTaskInfo::DumpAllTaskTile(int fd)
+void DumpTaskInfo::DumpAllTaskTile(int fd) const
 {
     std::ostringstream buffer;
     buffer << std::left;
@@ -43,21 +43,21 @@ void DumpTaskInfo::DumpAllTaskTile(int fd)
     dprintf(fd, "%s\n", buffer.str().c_str());
 }
 
-void DumpTaskInfo::FormatSummaryTitle(std::ostringstream &buffer)
+void DumpTaskInfo::FormatSummaryTitle(std::ostringstream &buffer) const
 {
     for (const auto &it: summaryColumnTitle_) {
         buffer << std::setw(it.first) << it.second;
     }
 }
 
-void DumpTaskInfo::FormatDetailTitle(std::ostringstream &buffer)
+void DumpTaskInfo::FormatDetailTitle(std::ostringstream &buffer) const
 {
     for (const auto &it: detailColumnTitle_) {
         buffer << std::setw(it.first) << it.second;
     }
 }
 
-void DumpTaskInfo::DumpTaskDetailInfoTile(int fd)
+void DumpTaskInfo::DumpTaskDetailInfoTile(int fd) const
 {
     std::ostringstream buffer;
     buffer << std::left;
@@ -66,7 +66,7 @@ void DumpTaskInfo::DumpTaskDetailInfoTile(int fd)
     dprintf(fd, "%s\n", buffer.str().c_str());
 }
 
-void DumpTaskInfo::FormatSummaryContent(const DownloadInfo &taskInfo, std::ostringstream &buffer)
+void DumpTaskInfo::FormatSummaryContent(const DownloadInfo &taskInfo, std::ostringstream &buffer) const
 {
     for (const auto &it: dumpSummaryCfg_) {
         auto columnFormatFun = it.second;
@@ -74,7 +74,7 @@ void DumpTaskInfo::FormatSummaryContent(const DownloadInfo &taskInfo, std::ostri
     }
 }
 
-void DumpTaskInfo::FormatDetailContent(const DownloadInfo &taskInfo, std::ostringstream &buffer)
+void DumpTaskInfo::FormatDetailContent(const DownloadInfo &taskInfo, std::ostringstream &buffer) const
 {
     for (const auto &it: dumpDetailCfg_) {
         auto columnFormatFun = it.second;
@@ -127,7 +127,7 @@ std::string DumpTaskInfo::DumpTaskID(const DownloadInfo &taskInfo) const
 
 std::string DumpTaskInfo::DumpTaskType(const DownloadInfo &taskInfo) const
 {
-    return "download";
+    return taskInfo.GetTaskType();
 }
 
 std::string DumpTaskInfo::DumpTaskStatus(const DownloadInfo &taskInfo) const
diff --git a/download/dfx/dump/dump_task_info.h b/download/dfx/dump/dump_task_info.h
index bbc8cbb..65f684e 100644
--- a/download/dfx/dump/dump_task_info.h
+++ b/download/dfx/dump/dump_task_info.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -31,14 +31,14 @@ public:
 
     bool Dump(int fd, const std::vector<std::string> &args) override;
 private:
-    void DumpAllTaskTile(int fd);
+    void DumpAllTaskTile(int fd) const;
     bool DumpAllTask(int fd);
-    void DumpTaskDetailInfoTile(int fd);
+    void DumpTaskDetailInfoTile(int fd) const;
     bool DumpTaskDetailInfo(int fd, uint32_t taskId);
-    void FormatSummaryTitle(std::ostringstream &buffer);
-    void FormatDetailTitle(std::ostringstream &buffer);
-    void FormatSummaryContent(const DownloadInfo &taskInfo, std::ostringstream &buffer);
-    void FormatDetailContent(const DownloadInfo &taskInfo, std::ostringstream &buffer);
+    void FormatSummaryTitle(std::ostringstream &buffer) const;
+    void FormatDetailTitle(std::ostringstream &buffer) const;
+    void FormatSummaryContent(const DownloadInfo &taskInfo, std::ostringstream &buffer) const;
+    void FormatDetailContent(const DownloadInfo &taskInfo, std::ostringstream &buffer) const;
 private:
     std::string DumpTaskID(const DownloadInfo &taskInfo) const;
     std::string DumpTaskType(const DownloadInfo &taskInfo) const;
diff --git a/download/dfx/dump/dumper_factory.h b/download/dfx/dump/dumper_factory.h
index 73d42d5..cf004fd 100644
--- a/download/dfx/dump/dumper_factory.h
+++ b/download/dfx/dump/dumper_factory.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/dump/i_dumper.h b/download/dfx/dump/i_dumper.h
index 9af3e8c..728a102 100644
--- a/download/dfx/dump/i_dumper.h
+++ b/download/dfx/dump/i_dumper.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/dump/task_info_dumper_factory.cpp b/download/dfx/dump/task_info_dumper_factory.cpp
index e294f73..247fdec 100644
--- a/download/dfx/dump/task_info_dumper_factory.cpp
+++ b/download/dfx/dump/task_info_dumper_factory.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/dump/task_info_dumper_factory.h b/download/dfx/dump/task_info_dumper_factory.h
index 7d921e8..100c527 100644
--- a/download/dfx/dump/task_info_dumper_factory.h
+++ b/download/dfx/dump/task_info_dumper_factory.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/event/fault/task_fault.cpp b/download/dfx/event/fault/task_fault.cpp
index fa83577..5b572d2 100644
--- a/download/dfx/event/fault/task_fault.cpp
+++ b/download/dfx/event/fault/task_fault.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/event/fault/task_fault.h b/download/dfx/event/fault/task_fault.h
index 8409a4a..f407a3e 100644
--- a/download/dfx/event/fault/task_fault.h
+++ b/download/dfx/event/fault/task_fault.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/download/dfx/event/statistics/task_statistics.cpp b/download/dfx/event/statistics/task_statistics.cpp
index c5bad1d..f26197b 100644
--- a/download/dfx/event/statistics/task_statistics.cpp
+++ b/download/dfx/event/statistics/task_statistics.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -28,24 +28,22 @@ TaskStatistics &TaskStatistics::GetInstance()
 
 void TaskStatistics::ReportTasksSize(uint64_t totalSize)
 {
-    std::lock_guard<std::mutex> lock(mutex_);
-    DayTasksSize_ += totalSize;
+    dayTasksSize_ += totalSize;
 }
 
 void TaskStatistics::ReportTasksNumber()
 {
-    std::lock_guard<std::mutex> lock(mutex_);
-    DayTasksNumber_ ++;
+    dayTasksNumber_ ++;
 }
 
 uint64_t TaskStatistics::GetDayTasksSize() const
 {
-    return DayTasksSize_;
+    return dayTasksSize_;
 }
 
 uint32_t TaskStatistics::GetDayTasksNumber() const
 {
-    return DayTasksNumber_;
+    return dayTasksNumber_;
 }
 
 int32_t TaskStatistics::GetNextReportInterval() const
@@ -70,8 +68,8 @@ void TaskStatistics::ReportStatistics() const
     OHOS::HiviewDFX::HiSysEvent::Write(OHOS::HiviewDFX::HiSysEvent::Domain::REQUEST,
         REQUEST_TASK_INFO_STATISTICS,
         OHOS::HiviewDFX::HiSysEvent::EventType::STATISTIC,
-        TASKS_SIZE, DayTasksSize_,
-        TASKS_NUMBER, DayTasksNumber_);
+        TASKS_SIZE, &dayTasksSize_,
+        TASKS_NUMBER, &dayTasksNumber_);
 }
 
 void TaskStatistics::StartTimerThread()
@@ -90,8 +88,8 @@ void TaskStatistics::StartTimerThread()
             DOWNLOAD_HILOGD("taskRun next interval: %{public}d", nextReportInterval);
             sleep(nextReportInterval);
             ReportStatistics();
-            this->DayTasksNumber_ = 0;
-            this->DayTasksSize_ = 0;
+            this->dayTasksNumber_ = 0;
+            this->dayTasksSize_ = 0;
         }
     };
     std::thread th = std::thread(fun);
diff --git a/download/dfx/event/statistics/task_statistics.h b/download/dfx/event/statistics/task_statistics.h
index 21bb2ca..823a39f 100644
--- a/download/dfx/event/statistics/task_statistics.h
+++ b/download/dfx/event/statistics/task_statistics.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -16,7 +16,6 @@
 #ifndef TASK_STATISTICS_H
 #define TASK_STATISTICS_H
 
-#include <mutex>
 #include <atomic>
 
 namespace OHOS::Request::Download {
@@ -42,13 +41,12 @@ private:
     static constexpr const char *REQUEST_TASK_INFO_STATISTICS = "REQUEST_TASK_INFO_STATISTICS";
     static constexpr const char *TASKS_SIZE = "TASKS_SIZE";
     static constexpr const char *TASKS_NUMBER = "TASKS_NUMBER";
-    static constexpr const int32_t ONE_DAY_SEC = 24 * 3600;
-    static constexpr const int32_t ONE_HOUR_SEC = 3600;
-    static constexpr const int32_t ONE_MINUTE_SEC = 60;
+    static constexpr int32_t ONE_DAY_SEC = 24 * 3600;
+    static constexpr int32_t ONE_HOUR_SEC = 3600;
+    static constexpr int32_t ONE_MINUTE_SEC = 60;
 
-    std::mutex mutex_;
-    int64_t DayTasksSize_ {0};
-    int32_t DayTasksNumber_ {0};
+    std::atomic<uint32_t> dayTasksNumber_ {0};
+    std::atomic<uint64_t> dayTasksSize_ {0};
     bool running_ { false };
 };
 }
diff --git a/download/interfaces/kits/js/napi/download_single/include/download_info.h b/download/interfaces/kits/js/napi/download_single/include/download_info.h
index 6f52a42..de4177f 100644
--- a/download/interfaces/kits/js/napi/download_single/include/download_info.h
+++ b/download/interfaces/kits/js/napi/download_single/include/download_info.h
@@ -76,6 +76,7 @@ public:
     [[nodiscard]] uint32_t GetNetworkType() const;
     [[nodiscard]] bool GetMetered() const;
     [[nodiscard]] bool GetRoaming() const;
+    [[nodiscard]] std::string GetTaskType() const;
     void Dump();
 
 private:
@@ -98,12 +99,14 @@ private:
     std::string targetURI_;
 	
     std::string downloadTitle_;
+    
+    std::string taskType_;
 
     uint32_t downloadTotalBytes_;
 
-    bool enableMetered_;
-    bool enableRoaming_;
-    uint32_t networkType_;
+    bool enableMetered_ {false};
+    bool enableRoaming_ {false};
+    uint32_t networkType_ {0};
 };
 } // namespace OHOS::Request::Download
 #endif /* DOWNLOAD_INFO_H */
diff --git a/download/interfaces/kits/js/napi/download_single/src/download_info.cpp b/download/interfaces/kits/js/napi/download_single/src/download_info.cpp
index ddeb331..5d7d68c 100644
--- a/download/interfaces/kits/js/napi/download_single/src/download_info.cpp
+++ b/download/interfaces/kits/js/napi/download_single/src/download_info.cpp
@@ -21,7 +21,7 @@ namespace OHOS::Request::Download {
 DownloadInfo::DownloadInfo()
     : description_(""), downloadedBytes_(0), downloadId_(0), failedReason_(ERROR_UNKNOWN), fileName_(""),
       filePath_(""), pausedReason_(PAUSED_UNKNOWN), status_(SESSION_UNKNOWN), targetURI_(""), downloadTitle_(""),
-      downloadTotalBytes_(0) {
+      taskType_("download"), downloadTotalBytes_(0) {
 }
 
 void DownloadInfo::SetDescription(const std::string &description)
@@ -144,6 +144,11 @@ const std::string &DownloadInfo::GetDownloadTitle() const
     return downloadTitle_;
 }
 
+std::string DownloadInfo::GetTaskType() const
+{
+    return taskType_;
+}
+
 uint32_t DownloadInfo::GetDownloadTotalBytes() const
 {
     return downloadTotalBytes_;
diff --git a/hisysevent.yaml b/hisysevent.yaml
index 2ddf2f1..8c167dc 100644
--- a/hisysevent.yaml
+++ b/hisysevent.yaml
@@ -46,13 +46,13 @@ REQUEST_SERVICE_START_FAULT:
 REQUEST_TASK_FAULT:
   __BASE: {type: FAULT, level: MINOR, desc: The request task fail }
   TASK_TYPE: {type: STRING, desc: Task type}
-  TOTAL_FILE_NUM: {type: INT32, desc: Total number of documents }
-  FAIL_FILE_NUM: {type: INT32, desc: Number of failed files }
-  SUCCESS_FILE_NUM: {type: INT32, desc: Number of successful files }
+  TOTAL_FILE_NUM: {type: UINT32, desc: Total number of documents }
+  FAIL_FILE_NUM: {type: UINT32, desc: Number of failed files }
+  SUCCESS_FILE_NUM: {type: UINT32, desc: Number of successful files }
   ERROR_INFO: {type: INT32, desc: Error code }
 
 REQUEST_TASK_INFO_STATISTICS:
   __BASE: {type: STATISTIC, level: MINOR, desc: Statistics of download tasks }
-  TASKS_SIZE: {type: INT64, desc: Download tasks size}
-  TASKS_NUMBER: {type: INT32, desc: Download tasks number}
+  TASKS_SIZE: {type: UINT64, desc: Download tasks size}
+  TASKS_NUMBER: {type: UINT32, desc: Download tasks number}
 
diff --git a/upload/frameworks/libs/include/upload_common.h b/upload/frameworks/libs/include/upload_common.h
index e4e49b8..67e9b3f 100644
--- a/upload/frameworks/libs/include/upload_common.h
+++ b/upload/frameworks/libs/include/upload_common.h
@@ -24,8 +24,8 @@ enum Type {
 };
 
 struct TaskResult {
-    int32_t successCount {0};
-    int32_t failCount {0};
+    uint32_t successCount {0};
+    uint32_t failCount {0};
     int32_t errorCode {0};
 };
 
diff --git a/upload/frameworks/libs/src/obtain_file.cpp b/upload/frameworks/libs/src/obtain_file.cpp
index f6024c2..fe90178 100644
--- a/upload/frameworks/libs/src/obtain_file.cpp
+++ b/upload/frameworks/libs/src/obtain_file.cpp
@@ -59,10 +59,10 @@ uint32_t ObtainFile::GetDataAbilityFile(FILE **file, std::string &fileUri,
 {
     uint32_t ret = UPLOAD_ERRORCODE_NO_ERROR;
     FILE *filePtr = nullptr;
-    int32_t fileLength = 0;
+    uint32_t fileLength = 0;
 
     do {
-        int32_t fd = fileAdapter_->DataAbilityOpenFile(fileUri, context);
+        uint32_t fd = fileAdapter_->DataAbilityOpenFile(fileUri, context);
         if (fd == -1) {
             UPLOAD_HILOGE(UPLOAD_MODULE_FRAMEWORK, "ObtainFile::GetDataAbilityFile, open file error.");
             ret = UPLOAD_ERRORCODE_GET_FILE_ERROR;