diff --git a/README.md b/README.md
index beb99e7..40bc98f 100644
--- a/README.md
+++ b/README.md
@@ -19,14 +19,14 @@ SimApi 全反射 JSON 序列化库（仓颉版），对齐 .NET `System.Text.Jso
 
 ```toml
 [dependencies]
-"simcu::serialization" = "1.2.0"
+"simcu::serialization" = "1.2.1"
 ```
 
 **方式二：Git 仓库**
 
 ```toml
 [dependencies]
-"simcu::serialization" = { git = "https://gitcode.com/simcu/serialization-cj.git", version = "1.2.0" }
+"simcu::serialization" = { git = "https://gitcode.com/simcu/serialization-cj.git", version = "1.2.1" }
 ```
 
 > 本地开发也可用 path 依赖：`"simcu::serialization" = { path = "../simapi-serialization" }`
@@ -227,19 +227,19 @@ JSON 数字 ↔ 字符串字段自动互转：`deserialize<String>("42")` → `"
 
 ```
 src/
-├── SimApiSerialization.cj      // 根锚点：public import common.* + json.*
+├── simapi_serialization.cj     // 根锚点：public import common.* + json.*
 ├── common/                     // XML/JSON 共用
-│   ├── Annotations.cj          // @PropertyName / @Ignore / @NotRequired
-│   ├── ReflectionCache.cj      // 字段元数据 + 继承链缓存
-│   └── NamingPolicy.cj         // PropertyNamingPolicy
+│   ├── annotations.cj          // @PropertyName / @Ignore / @NotRequired
+│   ├── reflection_cache.cj     // 字段元数据 + 继承链缓存
+│   └── naming_policy.cj        // PropertyNamingPolicy
 ├── json/                       // JSON 序列化
-│   ├── JsonSerializer.cj       // 公开 API（含 TypeInfo 版 deserialize）
-│   ├── JsonWriter.cj / JsonReader.cj
-│   └── JsonOption.cj
+│   ├── json_serializer.cj      // 公开 API（含 TypeInfo 版 deserialize）
+│   ├── json_writer.cj / json_reader.cj
+│   └── json_option.cj
 ├── macros/                     // @SerializerParent 宏
-│   └── SerializerParentMacro.cj
+│   └── serializer_parent_macro.cj
 └── tests/                      // 单元测试（独立子包）
-    └── JsonSerializer_test.cj  // cjpm test，21 用例
+    └── json_serializer_test.cj // cjpm test，21 用例
 ```
 
 ## 测试
diff --git a/cjpm.toml b/cjpm.toml
index 2196452..7609fee 100644
--- a/cjpm.toml
+++ b/cjpm.toml
@@ -3,7 +3,7 @@ cjc-version = "1.1.3"
 name = "serialization"
 organization = "simcu"
 description = "SimApi 全反射 JSON 序列化库"
-version = "1.2.0"
+version = "1.2.1"
 target-dir = ""
 output-type = "static"
 
diff --git a/src/common/Annotations.cj b/src/common/annotations.cj
similarity index 100%
rename from src/common/Annotations.cj
rename to src/common/annotations.cj
diff --git a/src/common/NamingPolicy.cj b/src/common/naming_policy.cj
similarity index 100%
rename from src/common/NamingPolicy.cj
rename to src/common/naming_policy.cj
diff --git a/src/common/ReflectionCache.cj b/src/common/reflection_cache.cj
similarity index 100%
rename from src/common/ReflectionCache.cj
rename to src/common/reflection_cache.cj
diff --git a/src/json/JsonOption.cj b/src/json/json_option.cj
similarity index 100%
rename from src/json/JsonOption.cj
rename to src/json/json_option.cj
diff --git a/src/json/JsonReader.cj b/src/json/json_reader.cj
similarity index 100%
rename from src/json/JsonReader.cj
rename to src/json/json_reader.cj
diff --git a/src/json/JsonSerializer.cj b/src/json/json_serializer.cj
similarity index 100%
rename from src/json/JsonSerializer.cj
rename to src/json/json_serializer.cj
diff --git a/src/json/JsonWriter.cj b/src/json/json_writer.cj
similarity index 100%
rename from src/json/JsonWriter.cj
rename to src/json/json_writer.cj
diff --git a/src/macros/SerializerParentMacro.cj b/src/macros/serializer_parent_macro.cj
similarity index 100%
rename from src/macros/SerializerParentMacro.cj
rename to src/macros/serializer_parent_macro.cj
diff --git a/src/SimApiSerialization.cj b/src/simapi_serialization.cj
similarity index 100%
rename from src/SimApiSerialization.cj
rename to src/simapi_serialization.cj
diff --git a/src/tests/JsonSerializer_test.cj b/src/tests/json_serializer_test.cj
similarity index 100%
rename from src/tests/JsonSerializer_test.cj
rename to src/tests/json_serializer_test.cj