diff --git a/StrategyPattern/Add.cs b/StrategyPattern/Add.cs
new file mode 100644
index 0000000000000000000000000000000000000000..c33c397c6d6c21f707d92c662b293c01ea43994d
--- /dev/null
+++ b/StrategyPattern/Add.cs
@@ -0,0 +1,40 @@
+/*
+ * ----------------------------------------------------------------
+ * Copyright @ Mr.Fu 2022. All rights reserved.
+ 
+ * 作    者 ：Mr.Fu 
+ 
+ * 创建时间 ：2022/8/20 10:26:31
+ 
+ * CLR 版本 ：4.0.30319.42000
+ 
+ * 命名空间 ：StrategyPattern
+ 
+ * 类 名 称 ：Add
+
+ * 类 描 述 ：
+ 
+ * ------------------------------------------------------
+ * 历史更新记录
+ 
+ * 版本 ：  V1.0.0.0        修改时间：2022/8/20 10:26:31         修改人：
+ 
+ * 修改内容：
+ * 
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StrategyPattern
+{
+    public class Add : ICalculate
+    {
+        public double Sum(int num, int num1)
+        {
+            Console.WriteLine($"Add:结果{num+num1}");
+            return num + num1;
+        }
+    }
+}
diff --git a/StrategyPattern/Division.cs b/StrategyPattern/Division.cs
new file mode 100644
index 0000000000000000000000000000000000000000..2c46d3445ade94be0ed29cc3678ece6f85318704
--- /dev/null
+++ b/StrategyPattern/Division.cs
@@ -0,0 +1,40 @@
+/*
+ * ----------------------------------------------------------------
+ * Copyright @ Mr.Fu 2022. All rights reserved.
+ 
+ * 作    者 ：Mr.Fu 
+ 
+ * 创建时间 ：2022/8/20 10:33:57
+ 
+ * CLR 版本 ：4.0.30319.42000
+ 
+ * 命名空间 ：StrategyPattern
+ 
+ * 类 名 称 ：Division
+
+ * 类 描 述 ：
+ 
+ * ------------------------------------------------------
+ * 历史更新记录
+ 
+ * 版本 ：  V1.0.0.0        修改时间：2022/8/20 10:33:57         修改人：
+ 
+ * 修改内容：
+ * 
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StrategyPattern
+{
+    public class Division : ICalculate
+    {
+        public double Sum(int num, int num1)
+        { 
+            Console.WriteLine($"division结果为：{(num * 0.1) / (num1 * 0.1)}");
+            return (num * 0.1) / (num1 * 0.1);
+        }
+    }
+}
diff --git a/StrategyPattern/ICalculate.cs b/StrategyPattern/ICalculate.cs
new file mode 100644
index 0000000000000000000000000000000000000000..a66b3aba8cd3ce6290e4c32815afc2ce514b585e
--- /dev/null
+++ b/StrategyPattern/ICalculate.cs
@@ -0,0 +1,41 @@
+/*
+ * ----------------------------------------------------------------
+ * Copyright @ Mr.Fu 2022. All rights reserved.
+ 
+ * 作    者 ：Mr.Fu 
+ 
+ * 创建时间 ：2022/8/20 10:11:38
+ 
+ * CLR 版本 ：4.0.30319.42000
+ 
+ * 命名空间 ：StrategyPattern
+ 
+ * 类 名 称 ：Icalculate
+
+ * 类 描 述 ：
+ 
+ * ------------------------------------------------------
+ * 历史更新记录
+ 
+ * 版本 ：  V1.0.0.0        修改时间：2022/8/20 10:11:38         修改人：
+ 
+ * 修改内容：
+ * 
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StrategyPattern
+{
+    public  interface ICalculate
+    {
+        /// <summary>
+        /// 算数
+        /// </summary>
+        /// <param name="num"></param>
+        /// <param name="num1"></param>
+        double Sum(int num,int num1);
+    }
+}
diff --git a/StrategyPattern/Multiplication.cs b/StrategyPattern/Multiplication.cs
new file mode 100644
index 0000000000000000000000000000000000000000..306a62c04c09504d5d9db9305e6903cc8c5f635b
--- /dev/null
+++ b/StrategyPattern/Multiplication.cs
@@ -0,0 +1,42 @@
+/*
+ * ----------------------------------------------------------------
+ * Copyright @ Mr.Fu 2022. All rights reserved.
+ 
+ * 作    者 ：Mr.Fu 
+ 
+ * 创建时间 ：2022/8/20 10:31:00
+ 
+ * CLR 版本 ：4.0.30319.42000
+ 
+ * 命名空间 ：StrategyPattern
+ 
+ * 类 名 称 ：Multiplication
+
+ * 类 描 述 ：
+ 
+ * ------------------------------------------------------
+ * 历史更新记录
+ 
+ * 版本 ：  V1.0.0.0        修改时间：2022/8/20 10:31:00         修改人：
+ 
+ * 修改内容：
+ * 
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace StrategyPattern
+{
+    public class Multiplication : ICalculate
+    {
+        public double Sum(int num, int num1)
+        {
+            
+            Console.WriteLine($"Multiplication结果为：{num* num1}");
+            return num * num1;
+        }
+    }
+}
diff --git a/StrategyPattern/Program.cs b/StrategyPattern/Program.cs
index ae4d5565b4bf4dd22ef29db3817501c9fc810a78..09ea6703366f37087240de45a68a70cc12eedb0c 100644
--- a/StrategyPattern/Program.cs
+++ b/StrategyPattern/Program.cs
@@ -4,9 +4,27 @@ namespace StrategyPattern
 {
     internal class Program
     {
+        /// <summary>
+        /// 策略模式
+        /// </summary>
+        /// <param name="args"></param>
         static void Main(string[] args)
         {
-            Console.WriteLine("Hello World!");
+            ICalculate calculate = new Add();
+            double result = calculate.Sum(1, 2);
+            Console.WriteLine($"Add:{result}");
+
+            ICalculate calculate1 = new Division();
+            double result1 = calculate1.Sum(1, 2);
+            Console.WriteLine($"Division:{result1}");
+
+            ICalculate calculate2 = new Multiplication();
+            double result2 = calculate2.Sum(1, 2);
+            Console.WriteLine($"Multiplication:{result2}");
+
+            ICalculate calculate3 = new Subtraction();
+            double result3 = calculate3.Sum(1, 2);
+            Console.WriteLine($"Subtraction:{result3}");
         }
     }
 }
diff --git a/StrategyPattern/Subtraction.cs b/StrategyPattern/Subtraction.cs
new file mode 100644
index 0000000000000000000000000000000000000000..a3ccf6d65789086ad63abaace4091f5552c2e192
--- /dev/null
+++ b/StrategyPattern/Subtraction.cs
@@ -0,0 +1,40 @@
+/*
+ * ----------------------------------------------------------------
+ * Copyright @ Mr.Fu 2022. All rights reserved.
+ 
+ * 作    者 ：Mr.Fu 
+ 
+ * 创建时间 ：2022/8/20 10:27:47
+ 
+ * CLR 版本 ：4.0.30319.42000
+ 
+ * 命名空间 ：StrategyPattern
+ 
+ * 类 名 称 ：Subtraction
+
+ * 类 描 述 ：
+ 
+ * ------------------------------------------------------
+ * 历史更新记录
+ 
+ * 版本 ：  V1.0.0.0        修改时间：2022/8/20 10:27:47         修改人：
+ 
+ * 修改内容：
+ * 
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StrategyPattern
+{
+    public class Subtraction : ICalculate
+    {
+        public double Sum(int num, int num1)
+        { 
+            Console.WriteLine($"Subtraction结果：{num- num1}");
+            return num - num1;
+        }
+    }
+}
diff --git a/StrategyPatternTestProject/StrategyPatternTestProject.csproj b/StrategyPatternTestProject/StrategyPatternTestProject.csproj
index 1502b1f1627137c782b60dd6764328c5379538d2..bdf472ee69e82bbd1b26613a04f3da95e5571bfd 100644
--- a/StrategyPatternTestProject/StrategyPatternTestProject.csproj
+++ b/StrategyPatternTestProject/StrategyPatternTestProject.csproj
@@ -19,4 +19,8 @@
     </PackageReference>
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\StrategyPattern\StrategyPattern.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/StrategyPatternTestProject/UnitTest1.cs b/StrategyPatternTestProject/UnitTest1.cs
index 14f5888866e6acddf3ce3429d57a8b06c33c9d97..ca463cc4dd03fe0e6e3c5b991ddb363779a9df6a 100644
--- a/StrategyPatternTestProject/UnitTest1.cs
+++ b/StrategyPatternTestProject/UnitTest1.cs
@@ -1,3 +1,4 @@
+using StrategyPattern;
 using System;
 using Xunit;
 
@@ -5,10 +6,39 @@ namespace StrategyPatternTestProject
 {
     public class UnitTest1
     {
-        [Fact]
-        public void Test1()
+     
+        
+        [Theory]
+        [InlineData(1,2)]
+        public void AddTest1(int num,int num1)
         {
-
-        }
+            ICalculate calculate = new Add();
+            double result =  calculate.Sum(num,num1);
+            Assert.Equal(3, result);  
+        } 
+        [Theory]
+        [InlineData(1, 2)]
+        public void DivisionTest1(int num, int num1)
+        {
+            ICalculate calculate1 = new Division();
+            double result1 = calculate1.Sum(num, num1);
+            Assert.Equal(0.5, result1);
+        } 
+        [Theory]
+        [InlineData(1, 2)]
+        public void MultiplicationTest1(int num, int num1)
+        {
+            ICalculate calculate2 = new Multiplication();
+            double result2 = calculate2.Sum(num, num1);
+            Assert.Equal(2, result2);
+        }  
+        [Theory]
+        [InlineData(1, 2)]
+        public void SubtractionTest1(int num, int num1)
+        {
+            ICalculate calculate3 = new Subtraction();
+            double result3 = calculate3.Sum(num, num1);
+            Assert.Equal(-1, result3);
+        }  
     }
 }