diff --git a/docs/changes.md b/docs/changes.md
index 2f29d0f17..ed65ef53c 100644
--- a/docs/changes.md
+++ b/docs/changes.md
@@ -2,6 +2,8 @@
 
 2023/12/06
   * fscript 增加 date\_time\_format
+  * 完善 fscript，先找全局函数，再找用户自定义的函数。
+  * 完善 csv 路径解析。
 
 2023/12/05
   * 完善fscript部分数学函数。
diff --git a/src/csv/csv_file_object.c b/src/csv/csv_file_object.c
index 02f6d4d99..c4aaa3346 100644
--- a/src/csv/csv_file_object.c
+++ b/src/csv/csv_file_object.c
@@ -68,10 +68,12 @@ static ret_t csv_path_parse(csv_path_t* path, csv_file_t* csv, const char* name)
   }
 
   if (*p == '[') {
+    return_value_if_fail(tk_isdigit(p[1]), RET_BAD_PARAMS);
     path->col = tk_atoi(p + 1);
   } else {
     path->col = csv_file_get_col_of_name(csv, p);
     if (path->col < 0) {
+      return_value_if_fail(tk_isdigit(p[0]), RET_BAD_PARAMS);
       path->col = tk_atoi(p);
     }
   }