diff --git a/interfaces/innerkits/nativetoken/include/nativetoken.h b/interfaces/innerkits/nativetoken/include/nativetoken.h
index d256589538076de295231ed900d9fa5403b88064..6532aa7e523a4b77c367dcd1bbb61ece5c6ca429 100644
--- a/interfaces/innerkits/nativetoken/include/nativetoken.h
+++ b/interfaces/innerkits/nativetoken/include/nativetoken.h
@@ -86,7 +86,7 @@ typedef struct TokenList {
     struct TokenList *next;
 } NativeTokenList;
 
-extern int32_t GetFileBuff(const char *cfg, char **retBuff);
+extern int32_t GetFileBuff(char **retBuff);
 #ifdef __cplusplus
 }
 #endif
diff --git a/interfaces/innerkits/nativetoken/src/nativetoken.c b/interfaces/innerkits/nativetoken/src/nativetoken.c
index 7ce4c8b8212dadea90b71adea9b49dab37a1c87e..afe1d476355f0adb44fbb3f271ed99130d80a5ca 100644
--- a/interfaces/innerkits/nativetoken/src/nativetoken.c
+++ b/interfaces/innerkits/nativetoken/src/nativetoken.c
@@ -18,22 +18,16 @@
 NativeTokenList *g_tokenListHead;
 int32_t g_isNativeTokenInited = 0;
 
-int32_t GetFileBuff(const char *cfg, char **retBuff)
+int32_t GetFileBuff(char **retBuff)
 {
     struct stat fileStat;
 
-    char filePath[PATH_MAX_LEN + 1] = {0};
-    if (realpath(cfg, filePath) == NULL) {
+    if (stat(TOKEN_ID_CFG_FILE_PATH, &fileStat) != 0) {
         if (errno == ENOENT) {
             /* file doesn't exist */
             *retBuff = NULL;
             return ATRET_SUCCESS;
         }
-        ACCESSTOKEN_LOG_ERROR("[ATLIB-%s]:invalid filePath.", __func__);
-        return ATRET_FAILED;
-    }
-
-    if (stat(filePath, &fileStat) != 0) {
         ACCESSTOKEN_LOG_ERROR("[ATLIB-%s]:stat file failed.", __func__);
         return ATRET_FAILED;
     }
@@ -50,7 +44,7 @@ int32_t GetFileBuff(const char *cfg, char **retBuff)
 
     size_t fileSize = (unsigned)fileStat.st_size;
 
-    FILE *cfgFd = fopen(filePath, "r");
+    FILE *cfgFd = fopen(TOKEN_ID_CFG_FILE_PATH, "r");
     if (cfgFd == NULL) {
         ACCESSTOKEN_LOG_ERROR("[ATLIB-%s]:fopen file failed.", __func__);
         return ATRET_FAILED;
@@ -216,7 +210,7 @@ static int32_t ParseTokenInfo(void)
     cJSON *record = NULL;
     int32_t ret;
 
-    ret = GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff);
+    ret = GetFileBuff(&fileBuff);
     if (ret != ATRET_SUCCESS) {
         return ret;
     }
@@ -478,7 +472,7 @@ static void SaveTokenIdToCfg(const NativeTokenList *curr)
     cJSON *record = NULL;
     int32_t ret;
 
-    ret = GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff);
+    ret = GetFileBuff(&fileBuff);
     if (ret != ATRET_SUCCESS) {
         return;
     }
@@ -685,7 +679,7 @@ static uint32_t UpdateTokenInfoInCfgFile(NativeTokenList *tokenNode)
     char *fileBuff = NULL;
     uint32_t ret;
 
-    if (GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff) != ATRET_SUCCESS) {
+    if (GetFileBuff(&fileBuff) != ATRET_SUCCESS) {
         return ATRET_FAILED;
     }
 
diff --git a/interfaces/innerkits/nativetoken/test/unittest/src/nativetoken_kit_test.cpp b/interfaces/innerkits/nativetoken/test/unittest/src/nativetoken_kit_test.cpp
index 44eb5cc82026b8a0cba97c77314b22dae4cea7ad..f84953ce45fd967b2f4bd65e6b7895762d540403 100644
--- a/interfaces/innerkits/nativetoken/test/unittest/src/nativetoken_kit_test.cpp
+++ b/interfaces/innerkits/nativetoken/test/unittest/src/nativetoken_kit_test.cpp
@@ -23,7 +23,7 @@ using namespace OHOS::Security;
 
 extern NativeTokenList *g_tokenListHead;
 extern int32_t g_isNativeTokenInited;
-extern int32_t GetFileBuff(const char *cfg, char **retBuff);
+extern int32_t GetFileBuff(char **retBuff);
 
 void TokenLibKitTest::SetUpTestCase()
 {}
@@ -224,7 +224,7 @@ HWTEST_F(TokenLibKitTest, GetAccessTokenId006, TestSize.Level1)
     ASSERT_NE(tokenID, 0);
 
     char *fileBuff = nullptr;
-    int ret = GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff);
+    int ret = GetFileBuff(&fileBuff);
     ASSERT_EQ(ret, ATRET_SUCCESS);
     string s = "GetAccessTokenId006";
     char *pos = strstr(fileBuff, s.c_str());
@@ -249,7 +249,7 @@ HWTEST_F(TokenLibKitTest, GetAccessTokenId007, TestSize.Level1)
         ASSERT_NE(tokenId, 0);
     }
     char *fileBuff = nullptr;
-    int ret = GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff);
+    int ret = GetFileBuff(&fileBuff);
     ASSERT_EQ(ret, 0);
     for (int32_t i = 0; i < 200; i++) {
         char *pos = strstr(fileBuff, processName[i]);
@@ -284,7 +284,7 @@ HWTEST_F(TokenLibKitTest, GetAccessTokenId008, TestSize.Level1)
     Start("process19");
 
     char *fileBuff = nullptr;
-    int ret = GetFileBuff(TOKEN_ID_CFG_FILE_PATH, &fileBuff);
+    int ret = GetFileBuff(&fileBuff);
     ASSERT_EQ(ret, 0);
     char *pos = strstr(fileBuff, "process1");
     ASSERT_NE(pos, nullptr);