diff --git a/src/iflytop/core/error/error_code.hpp b/src/iflytop/core/error/error_code.hpp
index 19fa471..d1dab3e 100644
--- a/src/iflytop/core/error/error_code.hpp
+++ b/src/iflytop/core/error/error_code.hpp
@@ -17,6 +17,7 @@ namespace err {
 using namespace std;
 
 typedef enum {
+  ksucc = 0,
   kfail = 1,
 
   /**
@@ -44,13 +45,27 @@ typedef enum {
    * runntime error
    */
   kre_catch_exception = 4000,
-
   /**
    * @brief 应用交互基本错误
    */
   kinteraction_error_passwd_error = 5000,
   kinteraction_error_user_not_exist,
 
+  /**
+   * @brief 系统错误
+   */
+  ksys_error = 6000,
+  ksys_create_file_error,
+  ksys_create_dir_error,
+  ksys_open_file_error,
+  ksys_open_dir_error,
+  ksys_read_file_error,
+  ksys_write_file_error,
+  ksys_close_file_error,
+  ksys_close_dir_error,
+  ksys_delete_file_error,
+  ksys_delete_dir_error,
+  ksys_copy_file_error,
 } error_t;
 
 #define kovertime         kce_overtime