diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMax.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMax.cs
new file mode 100644
index 000000000..12c20bc5d
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMax.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar
+{
+    public class SubMax:ISubOperation
+    {
+        public string Name
+        {
+            get
+            {
+                return "Max";
+            }
+        }
+
+        public Expression Expression
+        {
+            get; set;
+        }
+
+
+        public int Sort
+        {
+            get
+            {
+                return 200;
+            }
+        }
+
+        public ExpressionContext Context
+        {
+            get; set;
+        }
+
+        public string GetValue(Expression expression = null)
+        {
+            var exp = expression as MethodCallExpression;
+            return "MAX("+SubTools.GetMethodValue(this.Context, exp.Arguments[0], ResolveExpressType.FieldSingle)+")";
+        }
+    }
+}
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMin.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMin.cs
new file mode 100644
index 000000000..32ae0285b
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubMin.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar
+{
+    public class SubMin: ISubOperation
+    {
+        public string Name
+        {
+            get
+            {
+                return "Min";
+            }
+        }
+
+        public Expression Expression
+        {
+            get; set;
+        }
+
+
+        public int Sort
+        {
+            get
+            {
+                return 200;
+            }
+        }
+
+        public ExpressionContext Context
+        {
+            get; set;
+        }
+
+        public string GetValue(Expression expression = null)
+        {
+            var exp = expression as MethodCallExpression;
+            return "MIN(" + SubTools.GetMethodValue(this.Context, exp.Arguments[0], ResolveExpressType.FieldSingle) + ")";
+        }
+    }
+}
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
index 21af04649..33571f7cb 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
@@ -20,7 +20,9 @@ namespace SqlSugar
                                                     new SubNotAny(){ Context=Context },
                                                     new SubBegin(){ Context=Context },
                                                     new SubFromTable(){ Context=Context },
-                                                    new SubCount(){ Context=Context }
+                                                    new SubCount(){ Context=Context },
+                                                    new SubMax(){ Context=Context },
+                                                    new SubMin(){ Context=Context }
                                                 };
         }
 
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index ff07be160..dec6ce9e1 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -79,6 +79,8 @@
     <Compile Include="ExpressionsToSql\Subquery\Items\SubFromTable.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubAny.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubBegin.cs" />
+    <Compile Include="ExpressionsToSql\Subquery\Items\SubMin.cs" />
+    <Compile Include="ExpressionsToSql\Subquery\Items\SubMax.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubRightBracket.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubSelect.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubSelectDefault.cs" />