diff --git a/dllexports/awtk.def b/dllexports/awtk.def
index 983feb01c..383a910fe 100644
--- a/dllexports/awtk.def
+++ b/dllexports/awtk.def
@@ -2013,6 +2013,7 @@ EXPORTS
     system_info_init
     system_info_deinit
     system_info_set_font_scale
+    system_info_set_app_root
     system_info_set_default_font
     system_info_set_lcd_w
     system_info_set_lcd_h
diff --git a/src/base/system_info.c b/src/base/system_info.c
index f1f60dd6b..033c56e87 100644
--- a/src/base/system_info.c
+++ b/src/base/system_info.c
@@ -47,9 +47,9 @@ static bool_t app_root_is_valid(const char* app_root) {
   return path_exist(res_root);
 }
 
-static ret_t system_info_set_app_root(system_info_t* info, const char* app_root) {
+ret_t system_info_set_app_root(system_info_t* info, const char* app_root) {
   if (app_root != NULL) {
-    info->app_root = tk_strdup(app_root);
+    info->app_root = tk_str_copy(info->app_root, app_root);
     log_debug("app_root=%s\n", app_root);
   }
 
diff --git a/src/base/system_info.h b/src/base/system_info.h
index b2ffdd53d..508a3b048 100644
--- a/src/base/system_info.h
+++ b/src/base/system_info.h
@@ -171,6 +171,17 @@ ret_t system_info_deinit(void);
  */
 ret_t system_info_set_font_scale(system_info_t* info, float_t font_scale);
 
+/**
+ * @method system_info_set_app_root
+ * 设置app root。
+ *
+ * @param {system_info_t* info} info system_info对象。
+ * @param {const char*} app_root app root。
+ *
+ * @return {ret_t} 返回RET_OK表示成功，否则表示失败。
+ */
+ret_t system_info_set_app_root(system_info_t* info, const char* app_root);
+
 /**
  * @method system_info_set_default_font
  * 设置缺省字体。
diff --git a/tools/idl_gen/idl.json b/tools/idl_gen/idl.json
index 9cfea4620..847150df0 100644
--- a/tools/idl_gen/idl.json
+++ b/tools/idl_gen/idl.json
@@ -60641,6 +60641,27 @@
           "desc": "返回RET_OK表示成功，否则表示失败。"
         }
       },
+      {
+        "params": [
+          {
+            "type": "system_info_t* info",
+            "name": "info",
+            "desc": "system_info对象。"
+          },
+          {
+            "type": "const char*",
+            "name": "app_root",
+            "desc": "app root。"
+          }
+        ],
+        "annotation": {},
+        "desc": "设置app root。",
+        "name": "system_info_set_app_root",
+        "return": {
+          "type": "ret_t",
+          "desc": "返回RET_OK表示成功，否则表示失败。"
+        }
+      },
       {
         "params": [
           {