diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGeneratorFactory.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGeneratorFactory.java
index ea79ede3..034ade60 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGeneratorFactory.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGeneratorFactory.java
@@ -30,9 +30,9 @@ public class KeyGeneratorFactory {
         /** 内置了 uuid 的生成器，因此主键配置的时候可以直接配置为 @Id(keyType = KeyType.Generator, value = "uuid")
          * {@link com.mybatisflex.annotation.Id}
          */
-        register("uuid", new UUIDKeyGenerator());
-        register("flexId", new FlexIDKeyGenerator());
-        register("snowFlakeId", new SnowFlakeIDKeyGenerator());
+        register(KeyGenerators.uuid, new UUIDKeyGenerator());
+        register(KeyGenerators.flexId, new FlexIDKeyGenerator());
+        register(KeyGenerators.snowFlakeId, new SnowFlakeIDKeyGenerator());
     }
 
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGenerators.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGenerators.java
new file mode 100644
index 00000000..075e6752
--- /dev/null
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/keygen/KeyGenerators.java
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.mybatisflex.core.keygen;
+
+public class KeyGenerators {
+
+    /**
+     * uuid 主键生成器
+     * {@link com.mybatisflex.core.keygen.impl.UUIDKeyGenerator}
+     */
+    public static final String uuid = "uuid";
+
+    /**
+     * flexId 主键生成器
+     * {@link com.mybatisflex.core.keygen.impl.FlexIDKeyGenerator}
+     */
+    public static final String flexId = "flexId";
+
+    /**
+     * 雪花算法主键生成器
+     * {@link com.mybatisflex.core.keygen.impl.SnowFlakeIDKeyGenerator}
+     */
+    public static final String snowFlakeId = "snowFlakeId";
+}