diff --git a/Extensions/FreeSql.Extensions.EfCoreFluentApi/EfCoreTableFluent.cs b/Extensions/FreeSql.Extensions.EfCoreFluentApi/EfCoreTableFluent.cs
index b914fbab..b9ab2cb2 100644
--- a/Extensions/FreeSql.Extensions.EfCoreFluentApi/EfCoreTableFluent.cs
+++ b/Extensions/FreeSql.Extensions.EfCoreFluentApi/EfCoreTableFluent.cs
@@ -271,7 +271,7 @@ namespace FreeSql.Extensions.EfCoreFluentApi
                     _tf.ConfigEntity<T2>(eb2 => eb2.Navigate(_withOneProperty, _selfBind));
                 return this;
             }
-            public HasManyFluent<T2> HasForeignKey(Expression<Func<T, object>> foreignKey)
+            public HasManyFluent<T2> HasForeignKey(Expression<Func<T2, object>> foreignKey)
             {
                 if (foreignKey?.Body == null) throw new ArgumentException("参数错误 foreignKey 不能为 null");
                 var exp = foreignKey.Body;
diff --git a/Extensions/FreeSql.Extensions.EfCoreFluentApi/ICodeFirstExtensions.cs b/Extensions/FreeSql.Extensions.EfCoreFluentApi/ICodeFirstExtensions.cs
index bf2ff003..725da63a 100644
--- a/Extensions/FreeSql.Extensions.EfCoreFluentApi/ICodeFirstExtensions.cs
+++ b/Extensions/FreeSql.Extensions.EfCoreFluentApi/ICodeFirstExtensions.cs
@@ -36,6 +36,10 @@ namespace FreeSql.Extensions.EfCoreFluentApi
                 //多对多
                 eb.HasMany(a => a.Tags).WithMany(a => a.Songs, typeof(Song_tag));
             });
+            cf.Entity<SongType>(eb =>
+            {
+                eb.HasMany(a => a.Songs).WithOne(a => a.Type).HasForeignKey( a => a.TypeId)
+            });
         }
 
         public class SongType