diff --git a/Decorator/Decorator.csproj b/Decorator/Decorator.csproj
new file mode 100644
index 0000000..ce1697a
--- /dev/null
+++ b/Decorator/Decorator.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/Decorator/Finerlies/Finerly.cs b/Decorator/Finerlies/Finerly.cs
new file mode 100644
index 0000000..cedfc9e
--- /dev/null
+++ b/Decorator/Finerlies/Finerly.cs
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Decorator.Finerlies
+{
+    class Finerly : Person
+    {
+        protected Person _person;
+
+        public virtual void Decoteter(Person person)
+        {
+            _person = person;
+        }
+
+        public override void Show()
+        {
+            if (_person != null)
+            {
+                _person.Show();
+            }
+        }
+    }
+
+    class TShirts : Finerly
+    {
+        public override void Show()
+        {
+            Console.WriteLine("大T恤"); //扩展
+            base.Show();
+        }
+    }
+
+    class BigTrouser : Finerly
+    {
+        public override void Show()
+        {
+            Console.WriteLine("垮裤"); //扩展
+            base.Show();
+        }
+    }
+
+    class WearSneakers : Finerly
+    {
+        public override void Show()
+        {
+            Console.WriteLine("破球鞋"); //扩展
+            base.Show();
+        }
+    }
+}
diff --git a/Decorator/Finerlies/Person.cs b/Decorator/Finerlies/Person.cs
new file mode 100644
index 0000000..6d88414
--- /dev/null
+++ b/Decorator/Finerlies/Person.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Decorator.Finerlies
+{
+    /// <summary>
+    /// 装扮人类
+    /// </summary>
+    class Person
+    {
+        /// <summary>
+        /// 姓名
+        /// </summary>
+        private string _name;
+
+        public Person() { }
+
+        public Person(string name)
+        {
+            _name = name;
+        }
+
+        public virtual void Show()
+        {
+            Console.WriteLine("装扮的{0}", _name);
+        }
+    }
+}
diff --git a/Decorator/Program.cs b/Decorator/Program.cs
new file mode 100644
index 0000000..0092a5b
--- /dev/null
+++ b/Decorator/Program.cs
@@ -0,0 +1,33 @@
+/****
+ * 装饰模式：动态地给对象添加一些额外的职责，就增加功能而言，装饰模式比生产子类跟灵活。
+ * 优点：
+ *  把类中的装饰功能从类中搬移出去，这样可以简化原有的类。
+ * 缺点：
+ *  装饰模式会导致设计中出现许多小类，如果过度使用，会使程序变得很复杂
+ * 
+ * 
+ */
+
+using Decorator.Finerlies;
+using System;
+
+namespace Decorator
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Person xc = new Person("小李");
+
+            TShirts ts = new TShirts();
+            BigTrouser bt = new BigTrouser();
+            WearSneakers ws = new WearSneakers();
+
+            ts.Decoteter(xc);
+            bt.Decoteter(ts);
+            ws.Decoteter(bt);
+            ws.Show();
+            Console.ReadKey();
+        }
+    }
+}
diff --git a/DesignPatterns.sln b/DesignPatterns.sln
index 5d1a513..a3b3b34 100644
--- a/DesignPatterns.sln
+++ b/DesignPatterns.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.27004.2005
+VisualStudioVersion = 15.0.27004.2002
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "简单工厂模式", "简单工厂模式", "{B9A0E9C2-B585-44FB-A44A-1839C944992E}"
 EndProject
@@ -23,6 +23,13 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "单一职责原则", "单
 		C:\Users\litia\Desktop\单一职责原则.docx = C:\Users\litia\Desktop\单一职责原则.docx
 	EndProjectSection
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "装饰模式", "装饰模式", "{FD5FC40F-E348-43FE-8AB5-A37A4FD70470}"
+	ProjectSection(SolutionItems) = preProject
+		C:\Users\IWIT\Desktop\装饰者模式结构图.png = C:\Users\IWIT\Desktop\装饰者模式结构图.png
+	EndProjectSection
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Decorator", "Decorator\Decorator.csproj", "{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -37,6 +44,10 @@ Global
 		{2C4C7090-141C-41BC-BA69-E112916E4BCC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2C4C7090-141C-41BC-BA69-E112916E4BCC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2C4C7090-141C-41BC-BA69-E112916E4BCC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -44,6 +55,7 @@ Global
 	GlobalSection(NestedProjects) = preSolution
 		{09810354-E3B4-47FE-A9DA-D0DE69411C30} = {B9A0E9C2-B585-44FB-A44A-1839C944992E}
 		{2C4C7090-141C-41BC-BA69-E112916E4BCC} = {93EAC40F-A508-4F46-81FD-673789692318}
+		{B0519B67-B1D7-42F9-ABA8-D8CA6494C0EA} = {FD5FC40F-E348-43FE-8AB5-A37A4FD70470}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {E6743BD3-7935-40EF-BE42-93886BAC3C40}