diff --git a/common/database/src/idm_database.c b/common/database/src/idm_database.c
index 5dd296dab6f5f3083d857887da8a961aee65a1da..2cdab3c971b0734efa73c7dd5f917c9365e89ac7 100644
--- a/common/database/src/idm_database.c
+++ b/common/database/src/idm_database.c
@@ -702,6 +702,7 @@ ResultCode QueryCredentialFromExecutor(uint32_t authType, CredentialInfoHal **cr
         LOG_ERROR("no memory");
         return RESULT_NO_MEMORY;
     }
+    *num = 0;
     LinkedListNode *temp = g_userInfoList->head;
     while (temp != NULL) {
         UserInfo *user = (UserInfo *)temp->data;
@@ -709,7 +710,7 @@ ResultCode QueryCredentialFromExecutor(uint32_t authType, CredentialInfoHal **cr
         if (credentialQuery != NULL) {
             (*num)++;
             if (*num <= preApplyNum) {
-                *credentialInfos[*num - 1] = *credentialQuery;
+                (*credentialInfos)[*num - 1] = *credentialQuery;
                 temp = temp->next;
                 continue;
             }
@@ -731,9 +732,9 @@ ResultCode QueryCredentialFromExecutor(uint32_t authType, CredentialInfoHal **cr
             }
             Free(*credentialInfos);
             *credentialInfos = credentialsTemp;
-            *credentialInfos[*num - 1] = *credentialQuery;
+            (*credentialInfos)[*num - 1] = *credentialQuery;
         }
         temp = temp->next;
     }
     return RESULT_SUCCESS;
-}
\ No newline at end of file
+}