diff --git a/pom.xml b/pom.xml
index d736438..ce44102 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>cn.devezhao</groupId>
 	<artifactId>persist4j</artifactId>
-	<version>1.6.3</version>
+	<version>1.7.0</version>
 	<packaging>jar</packaging>
 	
 	<name>persist4j</name>
diff --git a/src/main/java/cn/devezhao/persist4j/Entity.java b/src/main/java/cn/devezhao/persist4j/Entity.java
index 6b1b351..e36b284 100644
--- a/src/main/java/cn/devezhao/persist4j/Entity.java
+++ b/src/main/java/cn/devezhao/persist4j/Entity.java
@@ -85,7 +85,14 @@ public interface Entity extends BaseMeta {
 	 * @return
 	 */
 	Entity getDetailEntity();
-	
+
+	/**
+	 * v1.7
+	 *
+	 * @return
+	 */
+	Entity[] getDetialEntities();
+
 	/**
 	 * 获取字段名称
 	 * 
diff --git a/src/main/java/cn/devezhao/persist4j/metadata/impl/EntityImpl.java b/src/main/java/cn/devezhao/persist4j/metadata/impl/EntityImpl.java
index b74fb43..24d41a9 100644
--- a/src/main/java/cn/devezhao/persist4j/metadata/impl/EntityImpl.java
+++ b/src/main/java/cn/devezhao/persist4j/metadata/impl/EntityImpl.java
@@ -32,7 +32,7 @@ public class EntityImpl extends BaseMetaObject implements Entity, Cloneable {
 	private List<Field> referenceTo = new ArrayList<>();
 	
 	private Entity mainEntity;
-	private Entity detailEntity;
+	private Set<Entity> detailEntities = new HashSet<>();
 
 	public EntityImpl(String name, String physicalName, String description, JSONObject extraAttrs,
 					  boolean creatable, boolean updatable, boolean queryable,
@@ -113,9 +113,14 @@ public Entity getMainEntity() {
 	
 	@Override
 	public Entity getDetailEntity() {
-		return detailEntity;
+		return detailEntities.isEmpty() ? null : getDetialEntities()[0];
 	}
-	
+
+	@Override
+	public Entity[] getDetialEntities() {
+		return detailEntities.toArray(new Entity[0]);
+	}
+
 	@Override
 	public String[] getFieldNames() {
 		return fieldMap.keySet().toArray(new String[0]);
@@ -154,7 +159,7 @@ protected Object clone() throws CloneNotSupportedException {
 		clone.fieldSorted = new LinkedHashSet<>(this.fieldSorted);
 		clone.referenceTo = new ArrayList<>(this.referenceTo);
 		clone.mainEntity = null;
-		clone.detailEntity = null;
+		clone.detailEntities = new HashSet<>();
 		return clone;
 	}
 
@@ -187,13 +192,13 @@ protected void addField(Field field) {
 	protected void addReferenceTo(Field field) {
 		referenceTo.add(field);
 	}
-	
+
 	/**
 	 * @param entity
 	 */
 	protected void setMainEntity(Entity entity) {
 		Assert.isNull(this.mainEntity, "Cannot reset `mainEntity`");
 		this.mainEntity = entity;
-		((EntityImpl) entity).detailEntity = this;
+		((EntityImpl) entity).detailEntities.add(this);
 	}
 }
diff --git a/src/test/java/cn/devezhao/persist4j/metadata/MetadataTest.java b/src/test/java/cn/devezhao/persist4j/metadata/MetadataTest.java
index 17e50e8..8a906ff 100644
--- a/src/test/java/cn/devezhao/persist4j/metadata/MetadataTest.java
+++ b/src/test/java/cn/devezhao/persist4j/metadata/MetadataTest.java
@@ -8,6 +8,8 @@
 import org.apache.commons.lang.StringUtils;
 import org.junit.Test;
 
+import java.util.Arrays;
+
 /**
  * @author zhaofang123@gmail.com
  * @since 12/28/2018
@@ -16,8 +18,7 @@ public class MetadataTest {
 
 	@Test
 	public void testAnyReference() throws Exception {
-		Dialect dialect = new MySQL5Dialect();
-		MetadataFactory metadataFactory = new ConfigurationMetadataFactory("metadata-test.xml", dialect);
+		final MetadataFactory metadataFactory = createMetadataFactory();
 		
 		Entity allTypes = metadataFactory.getEntity(100);
 		Field anyReference1 = allTypes.getField("tanyreference");
@@ -29,8 +30,7 @@ public void testAnyReference() throws Exception {
 	
 	@Test
 	public void testReferenceToFields() throws Exception {
-		Dialect dialect = new MySQL5Dialect();
-		MetadataFactory metadataFactory = new ConfigurationMetadataFactory("metadata-test.xml", dialect);
+		final MetadataFactory metadataFactory = createMetadataFactory();
 		
 		Entity test = metadataFactory.getEntity(102);
 		for (Field field : test.getReferenceToFields()) {
@@ -40,10 +40,31 @@ public void testReferenceToFields() throws Exception {
 
 	@Test
 	public void testCommon() {
-		Dialect dialect = new MySQL5Dialect();
-		MetadataFactory metadataFactory = new ConfigurationMetadataFactory("metadata-test.xml", dialect);
+		final MetadataFactory metadataFactory = createMetadataFactory();
 
 		Field commonReference = metadataFactory.getEntity("Test2").getField("commonReference");
 		System.out.println(commonReference);
 	}
+
+	@Test
+	public void testNDetails() {
+		final MetadataFactory metadataFactory = createMetadataFactory();
+
+		Entity main = metadataFactory.getEntity(200);
+		System.out.println(main.getDetailEntity());
+		System.out.println(Arrays.toString(main.getDetialEntities()));
+
+		Entity detail1 = metadataFactory.getEntity(201);
+		System.out.println(detail1.getMainEntity());
+
+		Entity detail2 = metadataFactory.getEntity(202);
+		System.out.println(detail2.getMainEntity());
+
+		System.out.println(detail1.getMainEntity() == (detail2.getMainEntity()));
+	}
+
+	static MetadataFactory createMetadataFactory() {
+		Dialect dialect = new MySQL5Dialect();
+		return new ConfigurationMetadataFactory("metadata-test.xml", dialect);
+	}
 }
diff --git a/src/test/resources/metadata-test.xml b/src/test/resources/metadata-test.xml
index bbe29ee..dfdb65f 100644
--- a/src/test/resources/metadata-test.xml
+++ b/src/test/resources/metadata-test.xml
@@ -53,5 +53,20 @@
 		<field name="week" type="string" />
 		<field name="count" type="string"/>
 	</entity>
+
+	<entity name="MainEntity" type-code="200">
+		<field name="id" type="primary"/>
+		<field name="name" type="string"/>
+	</entity>
+
+	<entity name="DetailEntity1" type-code="201" main="MainEntity">
+		<field name="id" type="primary"/>
+		<field name="name" type="string"/>
+	</entity>
+
+	<entity name="DetailEntity2" type-code="202" main="MainEntity">
+		<field name="id" type="primary"/>
+		<field name="name" type="string"/>
+	</entity>
 	
 </metadata-config>
\ No newline at end of file