diff --git a/orm/README.md b/orm/README.md
index ae3fed09..c1194564 100644
--- a/orm/README.md
+++ b/orm/README.md
@@ -26,7 +26,7 @@ var collection = OrmContext.getOrmManager().getCollection(UserEntity.class)
 #### 2. Indirect use (middle level API) to access data through the collection's simple wrapper IAccessor and IQuery interfaces
 
 - IAccessor is a data access interface
-  - Inserting data into the database uses the return value of the object's id() method as the primary key
+  - Inserting data into the database uses the field value of the object's field which marked `@Id` as the primary key
   ```
   OrmContext.getAccessor().insert(obj)
   ```
diff --git a/orm/README_CN.md b/orm/README_CN.md
index 2e45dcfc..dad0f0e2 100644
--- a/orm/README_CN.md
+++ b/orm/README_CN.md
@@ -25,7 +25,7 @@ var collection = OrmContext.getOrmManager().getCollection(UserEntity.class)
 #### 2. 间接使用(middle level api)，通过collection的简易包装类IAccessor和IQuery接口访问数据
 
 - IAccessor接口，为数据访问接口
-  - 插入数据到数据库，会以对象的id()方法的返回值作为主键
+  - 插入数据到数据库，会以对象class的@Id字段的值作为主键
   ```
   OrmContext.getAccessor().insert(obj)
   ```
diff --git a/orm/src/main/java/com/zfoo/orm/convention/ZfooAnnotationConvention.java b/orm/src/main/java/com/zfoo/orm/convention/ZfooAnnotationConvention.java
new file mode 100644
index 00000000..569196a2
--- /dev/null
+++ b/orm/src/main/java/com/zfoo/orm/convention/ZfooAnnotationConvention.java
@@ -0,0 +1,45 @@
+package com.zfoo.orm.convention;
+
+import com.zfoo.orm.anno.Id;
+import org.bson.BsonType;
+import org.bson.codecs.pojo.ClassModelBuilder;
+import org.bson.codecs.pojo.Convention;
+import org.bson.codecs.pojo.PropertyModelBuilder;
+import org.bson.codecs.pojo.annotations.*;
+
+import java.lang.annotation.Annotation;
+
+/**
+ * zfoo注解约定
+ *
+ * @author Sando
+ * @version 1.0
+ * @since 2024/7/30
+ */
+public class ZfooAnnotationConvention implements Convention {
+    public static final ZfooAnnotationConvention INSTANCE = new ZfooAnnotationConvention();
+    @Override
+    public void apply(ClassModelBuilder<?> classModelBuilder) {
+        for (PropertyModelBuilder<?> propertyModelBuilder : classModelBuilder.getPropertyModelBuilders()) {
+            processPropertyAnnotations(classModelBuilder, propertyModelBuilder);
+        }
+    }
+
+    private void processPropertyAnnotations(final ClassModelBuilder<?> classModelBuilder,
+                                            final PropertyModelBuilder<?> propertyModelBuilder) {
+        for (Annotation annotation : propertyModelBuilder.getReadAnnotations()) {
+            if (annotation instanceof Id) {
+                String idPropertyName = classModelBuilder.getIdPropertyName();
+                String fieldName = propertyModelBuilder.getName();
+                if (idPropertyName != null && !fieldName.equals(idPropertyName)) {
+                    // allow using @Id and @BsonId on same field
+                    String typeName = classModelBuilder.getType().getName();
+                    throw new IllegalStateException("The class " +
+                            typeName + " has more than one id property. The properties are " +
+                            idPropertyName + " and " + fieldName);
+                }
+                classModelBuilder.idPropertyName(fieldName);
+            }
+        }
+    }
+}
diff --git a/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java b/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
index d4788d00..81c7e8c3 100644
--- a/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
+++ b/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
@@ -30,6 +30,7 @@ import com.zfoo.orm.codec.MapCodecProvider;
 import com.zfoo.orm.config.CacheStrategy;
 import com.zfoo.orm.config.OrmConfig;
 import com.zfoo.orm.config.PersisterStrategy;
+import com.zfoo.orm.convention.ZfooAnnotationConvention;
 import com.zfoo.orm.model.EntityDef;
 import com.zfoo.orm.model.IEntity;
 import com.zfoo.orm.model.IndexDef;
@@ -42,7 +43,6 @@ import org.bson.Document;
 import org.bson.codecs.configuration.CodecRegistries;
 import org.bson.codecs.pojo.Conventions;
 import org.bson.codecs.pojo.PojoCodecProvider;
-import org.bson.codecs.pojo.annotations.BsonId;
 import org.bson.types.ObjectId;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -105,12 +105,11 @@ public class OrmManager implements IOrmManager {
             allEntityCachesUsableMap.put(entityClass, false);
         }
 
-        var pojoCodecProvider = PojoCodecProvider.builder()
-                .conventions(List.of(Conventions.ANNOTATION_CONVENTION))
-                .automatic(true)
-                .register(new MapCodecProvider())
-                .build();
-        var codecRegistry = CodecRegistries.fromRegistries(MongoClientSettings.getDefaultCodecRegistry(), CodecRegistries.fromProviders(pojoCodecProvider));
+        var pojoCodecProvider = PojoCodecProvider.builder().automatic(true)
+                .conventions(List.of(Conventions.ANNOTATION_CONVENTION, ZfooAnnotationConvention.INSTANCE))
+                .register(new MapCodecProvider()).build();
+        var codecRegistry = CodecRegistries.fromRegistries(MongoClientSettings.getDefaultCodecRegistry(),
+                CodecRegistries.fromProviders(pojoCodecProvider));
 
         var mongoBuilder = MongoClientSettings
                 .builder()
@@ -441,7 +440,7 @@ public class OrmManager implements IOrmManager {
         var getIdMethod = ReflectionUtils.getMethodByNameInPOJOClass(clazz, FieldUtils.fieldToGetMethod(clazz, idField));
         var returnTypeOfGetIdMethod = getIdMethod.getReturnType();
         AssertionUtils.isTrue(returnTypeOfGetIdMethod.equals(idFieldType), "[{}] getIdMethod:[{}] return type:[{}] must be equal with type id:[{}]"
-                , clazz.getSimpleName(), getIdMethod.getName(), returnTypeOfGetIdMethod.getName(), idFieldType.getName());
+                , clazz.getSimpleName(), getIdMethod.getName(),returnTypeOfGetIdMethod.getName(), idFieldType.getName());
 
         // 随机给id字段赋值，然后调用id()方法，看看两者的返回值是不是一样的，避免出错
         var entityInstance = ReflectionUtils.newInstance(clazz);
@@ -462,10 +461,6 @@ public class OrmManager implements IOrmManager {
             throw new RunException("orm id field only supports int long float double String ObjectId");
         }
 
-        if (!idField.getName().equals("id") && !idField.isAnnotationPresent(BsonId.class)) {
-            throw new RunException("use @BsonId annotation to @Id filed:[{}] or rename this field with id", idField.getName());
-        }
-
         ReflectionUtils.makeAccessible(idField);
         ReflectionUtils.setField(idField, entityInstance, idFiledValue);
         var idMethodOptional = Arrays.stream(ReflectionUtils.getAllMethods(clazz)).filter(it -> it.getName().equalsIgnoreCase("id"))
diff --git a/orm/src/test/java/com/zfoo/orm/entity/MailEntity.java b/orm/src/test/java/com/zfoo/orm/entity/MailEntity.java
index 7e91db53..bb4fed38 100644
--- a/orm/src/test/java/com/zfoo/orm/entity/MailEntity.java
+++ b/orm/src/test/java/com/zfoo/orm/entity/MailEntity.java
@@ -13,10 +13,10 @@
 
 package com.zfoo.orm.entity;
 
+import com.zfoo.orm.anno.EntityCache;
 import com.zfoo.orm.anno.Id;
 import com.zfoo.orm.anno.Index;
 import com.zfoo.orm.model.IEntity;
-import org.bson.codecs.pojo.annotations.BsonId;
 
 import java.util.Date;
 
@@ -24,10 +24,10 @@ import java.util.Date;
 /**
  * @author godotg
  */
+@EntityCache
 public class MailEntity implements IEntity<String> {
 
     @Id
-    @BsonId
     private String mailId;
 
     @Index(ascending = true, unique = false)
@@ -37,9 +37,9 @@ public class MailEntity implements IEntity<String> {
 
     private Date createDate;
 
-    public static MailEntity valueOf(String mailId, String userName, String content, Date createDate) {
+    public static MailEntity valueOf(String id, String userName, String content, Date createDate) {
         var entity = new MailEntity();
-        entity.mailId = mailId;
+        entity.mailId = id;
         entity.userName = userName;
         entity.content = content;
         entity.createDate = createDate;