diff --git a/Falcon.SugarApi.Test/ObjectExtendTest.cs b/Falcon.SugarApi.Test/ObjectExtendTest.cs
index 76d8a5c..8194296 100644
--- a/Falcon.SugarApi.Test/ObjectExtendTest.cs
+++ b/Falcon.SugarApi.Test/ObjectExtendTest.cs
@@ -125,6 +125,26 @@ namespace Falcon.SugarApi.Test
             Assert.IsTrue(fullCount > nFullCount);
 
         }
+
+        /// <summary>
+        /// 测试In方法
+        /// </summary>
+        [TestMethod]
+        public void ObjectInTest() {
+            string obj = "abc";
+            Assert.IsTrue(obj.In("eee","abc","1231"));
+            Assert.IsFalse(obj.In("2313","eeee"));
+
+            var o1 = new object();
+            Assert.IsTrue(o1.In(o1));
+            Assert.IsFalse(o1.In( new object(),new object()));
+
+            var o2 = new ObjWithComparable { val = 1 };
+            var o22 = new ObjWithComparable { val = 1 };
+            var o23 = new ObjWithComparable { val = 1 };
+            Assert.IsTrue(o2.In(o22,o23));
+        }
+
     }
     /// <summary>
     /// 扩展属性测试类
@@ -157,4 +177,18 @@ namespace Falcon.SugarApi.Test
     {
         public string ItemA { get; set; } = "itema";
     }
+
+    public class ObjWithComparable
+    {
+        public int val { get; set; }
+
+        public int CompareTo(ObjWithComparable? other) {
+            return this.val - other.val;
+        }
+
+        public override bool Equals(object? obj) {
+            var c = obj as ObjWithComparable;
+            return c == null ? false : c.val == this.val;
+        }
+    }
 }
diff --git a/Falcon.SugarApi.sln b/Falcon.SugarApi.sln
index d482c54..7f65dd1 100644
--- a/Falcon.SugarApi.sln
+++ b/Falcon.SugarApi.sln
@@ -21,7 +21,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RabbitMqTest", "RabbitMqTes
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CSharpTest", "CSharpTest\CSharpTest.csproj", "{FA6A7A47-7EEE-4264-9C89-C2E717B1CB78}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NugetPluginTest", "NugetPluginTest\NugetPluginTest.csproj", "{3570FDA6-C408-4A61-852E-3B4F1DCAD1AD}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NugetPluginTest", "NugetPluginTest\NugetPluginTest.csproj", "{3570FDA6-C408-4A61-852E-3B4F1DCAD1AD}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/Falcon.SugarApi/ObjectExtend.cs b/Falcon.SugarApi/ObjectExtend.cs
index fec413f..59a35cd 100644
--- a/Falcon.SugarApi/ObjectExtend.cs
+++ b/Falcon.SugarApi/ObjectExtend.cs
@@ -208,6 +208,26 @@ namespace Falcon.SugarApi
             targetBuilder?.Invoke(obj);
             return obj as T;
         }
+
+        /// <summary>
+        /// 判断对象是否在目标对象数组中。如果对象实现IComparable，则使用IComparable比较对象，否则使用Equals方法比较对象
+        /// </summary>
+        /// <typeparam name="T">对象类型</typeparam>
+        /// <param name="obj">当前对象</param>
+        /// <param name="values">目标对象数组</param>
+        /// <returns>在数组中返回True，否则False</returns>
+        public static bool In<T>(this T obj,params T[] values) {
+            if(obj == null) {
+                return values.Any(a => a == null);
+            }
+            foreach(var i in values) {
+                if(obj.Equals(i)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
     }
 
     /// <summary>