diff --git a/src/oebuild/local_conf.py b/src/oebuild/local_conf.py
index 83828b9a31bf8929c8298e9340989de1ba55d4fb..ca72555a07bf27df9fef4cffb5b3e4a1bf982659 100644
--- a/src/oebuild/local_conf.py
+++ b/src/oebuild/local_conf.py
@@ -168,7 +168,10 @@ class LocalConf:
 
         content = self.match_lib_param(content=content)
 
-        content = self.replace_param(parse_compile=parse_compile, content=content)
+        user_content_flag = "#===========the content is user added=================="
+        if user_content_flag not in content and parse_compile.local_conf != "":
+            content += f"\n{user_content_flag}\n"
+            content += parse_compile.local_conf
 
         if content is None:
             return
diff --git a/src/oebuild/parse_template.py b/src/oebuild/parse_template.py
index 4a5464f32083eefe49edb339f375c85aaaacb7d4..921f984ef1174cf1e52d1b20b2b13eb0b1c246de 100644
--- a/src/oebuild/parse_template.py
+++ b/src/oebuild/parse_template.py
@@ -137,8 +137,8 @@ class ParseTemplate:
                     machine=data['machine'],
                     toolchain_type=data['toolchain_type'],
                     repos=repo_dict,
-                    local_conf=local_conf,
-                    layers=layers)
+                    local_conf=None if local_conf is None else LiteralScalarString(local_conf),
+                    layers=None if layers is None else layers)
                 return
 
             if self.platform_template is None:
@@ -156,8 +156,8 @@ class ParseTemplate:
                 feature_name=LiteralScalarString(os.path.splitext(config_name)[0]),
                 repos=repo_dict,
                 support=support_arch,
-                local_conf=LiteralScalarString(local_conf),
-                layers=layers
+                local_conf=None if local_conf is None else LiteralScalarString(local_conf),
+                layers=None if layers is None else layers
             ))
 
         except Exception as e_p:
@@ -255,6 +255,7 @@ class ParseTemplate:
         compile_conf['repos'] = repos
         compile_conf['local_conf'] = local_conf
         compile_conf['layers'] = layers
+
         return compile_conf
 
     @staticmethod
diff --git a/src/oebuild/version.py b/src/oebuild/version.py
index 81392fe79a5ff3f7577769a60f20dc25d29af4e7..05f2c9a10b5eeb322c16d62d0a7fc7dc0d17cbd4 100644
--- a/src/oebuild/version.py
+++ b/src/oebuild/version.py
@@ -10,4 +10,4 @@ MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 See the Mulan PSL v2 for more details.
 '''
 
-__version__ = '0.0.18'
+__version__ = '0.0.21'