diff --git a/services/accesstokenmanager/main/cpp/include/dfx/hisysevent_adapter.h b/services/accesstokenmanager/main/cpp/include/dfx/hisysevent_adapter.h
index 4e58271b2ef401406d100d6b524150554ee53069..65eb370c08af81ae8d7472430e07a0c3d8b13f4f 100644
--- a/services/accesstokenmanager/main/cpp/include/dfx/hisysevent_adapter.h
+++ b/services/accesstokenmanager/main/cpp/include/dfx/hisysevent_adapter.h
@@ -74,6 +74,8 @@ void ReportSysEventServiceStart(const AccessTokenDfxInfo& info);
 void ReportSysEventServiceStartError(SceneCode scene, const std::string& errMsg, int32_t errCode);
 void ReportSysCommonEventError(int32_t ipcCode, int32_t errCode);
 void ReportSysEventAddHap(const AccessTokenDfxInfo& info);
+uint64_t GetUserDataRemainSize();
+void ReportUserDataSize();
 
 } // namespace AccessToken
 } // namespace Security
diff --git a/services/accesstokenmanager/main/cpp/src/dfx/hisysevent_adapter.cpp b/services/accesstokenmanager/main/cpp/src/dfx/hisysevent_adapter.cpp
index f13756be48d35cc2d04d19dd1e8505f798554d21..fe4b0b737f9af65809123d275612b06d1335d714 100644
--- a/services/accesstokenmanager/main/cpp/src/dfx/hisysevent_adapter.cpp
+++ b/services/accesstokenmanager/main/cpp/src/dfx/hisysevent_adapter.cpp
@@ -13,9 +13,12 @@
  * limitations under the License.
  */
 
-#include "hisysevent_adapter.h"
+#include <sys/statfs.h>
+#include <vector>
 #include "accesstoken_common_log.h"
+#include "directory_ex.h"
 #include "hisysevent.h"
+#include "hisysevent_adapter.h"
 #include "time_util.h"
 
 namespace OHOS {
@@ -24,6 +27,11 @@ namespace AccessToken {
 namespace {
 static const std::string ACCESSTOKEN_PROCESS_NAME = "accesstoken_service";
 static constexpr char ADD_DOMAIN[] = "PERFORMANCE";
+static const std::string ACCESS_TOKEN_NAME = "access_token";
+static const std::string TOKEN_ID_CFG_DIR_PATH = "/data/service/el0/access_token/";
+static const std::string DATABASE_PATH = "/data/service/el1/public/access_token/";
+static const std::string DATA_FOLDER = "/data";
+static constexpr uint64_t INVALID_SIZE = 0;
 }
 
 void ReportSysEventPerformance()
@@ -95,6 +103,26 @@ void ReportSysEventAddHap(const AccessTokenDfxInfo& info)
         LOGE(ATM_DOMAIN, ATM_TAG, "Failed to write hisysevent write, ret %{public}d.", res);
     }
 }
+
+uint64_t GetUserDataRemainSize()
+{
+    struct statfs stat;
+    if (statfs(DATA_FOLDER.c_str(), &stat) != 0) {
+        LOGE(ATM_DOMAIN, ATM_TAG, "Failed to get data remain size.");
+        return INVALID_SIZE;
+    }
+    return static_cast<uint64_t>(stat.f_bfree) * stat.f_bsize;
+}
+
+void ReportUserDataSize()
+{
+    std::vector<std::string> folderPath{TOKEN_ID_CFG_DIR_PATH, DATABASE_PATH};
+    std::vector<uint64_t> folderSize{GetFolderSize(TOKEN_ID_CFG_DIR_PATH), GetFolderSize(DATABASE_PATH)};
+    HiSysEventWrite(HiviewDFX::HiSysEvent::Domain::FILEMANAGEMENT, "USER_DATA_SIZE",
+        HiviewDFX::HiSysEvent::EventType::STATISTIC, "COMPONENT_NAME", ACCESS_TOKEN_NAME, "PARTITION_NAME", DATA_FOLDER,
+        "REMAIN_PARTITION_SIZE", GetUserDataRemainSize(),
+        "FILE_OR_FOLDER_PATH", folderPath, "FILE_OR_FOLDER_SIZE", folderSize);
+}
 } // namespace AccessToken
 } // namespace Security
 } // namespace OHOS
\ No newline at end of file
diff --git a/services/accesstokenmanager/main/cpp/src/service/accesstoken_manager_service.cpp b/services/accesstokenmanager/main/cpp/src/service/accesstoken_manager_service.cpp
index 02262ad1d4f025833cf8b606144daeca74eb48eb..6ee7f90cb828e49e29822b8f5a2565c98fcc9526 100644
--- a/services/accesstokenmanager/main/cpp/src/service/accesstoken_manager_service.cpp
+++ b/services/accesstokenmanager/main/cpp/src/service/accesstoken_manager_service.cpp
@@ -1407,6 +1407,7 @@ bool AccessTokenManagerService::Initialize()
     GetConfigValue(dfxInfo.parseConfigFlag);
 
     ReportSysEventServiceStart(dfxInfo);
+    ReportUserDataSize();
     LOGI(ATM_DOMAIN, ATM_TAG, "Initialize success");
     return true;
 }