diff --git a/lbkit/lbkit/codegen/idf_interface.py b/lbkit/lbkit/codegen/idf_interface.py
index 567300d5748ef7edb2b4e58a5da837adc817ed07..0474528b3a00e8587946aec65d5a29adeacad01f 100644
--- a/lbkit/lbkit/codegen/idf_interface.py
+++ b/lbkit/lbkit/codegen/idf_interface.py
@@ -124,6 +124,8 @@ CTYPE_SIGNATURE_MAP = {
 }
 
 def get_intfname_and_ctype(class_alias: str, ctype: str):
+    if ctype == "self":
+        return class_alias, class_alias
     match = re.findall(r"([\w][\w\d]*)", ctype)
     intf = ".".join(match[:-1])
     ctype = match[-1]
@@ -426,6 +428,8 @@ class IdfCtypeRender():
             if is_array:
                 # 结构体数组初始化时为二级空指针，以空指针结束
                 return [f"{stru_name} *<const>*<arg_name>"]
+            elif stru_name == self.intf.alias:
+                return [f"<const>struct _{stru_name} *<arg_name>"]
             else:
                 # 结构体成员初始化时为空结构体，由反序列化时填充内容
                 return [f"<const>{stru_name} *<arg_name>"]