diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
index a35aeecb0..82f049d56 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
@@ -968,5 +968,11 @@ namespace SqlSugar
                 return result;
             }
         }
+
+        public virtual string WeekOfYear(MethodCallExpressionModel mode) 
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $" DATE_PART('week', {parameterNameA}) ";
+        }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
index b0b124dae..fb8e084bc 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
@@ -113,5 +113,6 @@ namespace SqlSugar
         string Modulo(MethodCallExpressionModel mode);
         string Like(MethodCallExpressionModel mode);
         string ToSingle(MethodCallExpressionModel mode);
+        string WeekOfYear(MethodCallExpressionModel mode);
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
index 02d5ff348..571a165ac 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
@@ -9,6 +9,10 @@ namespace SqlSugar
 {
     public partial class SqlFunc
     {
+        public static int WeekOfYear(DateTime fieldName) 
+        {
+            throw new NotSupportedException("Can only be used in expressions");
+        }
         public static bool Like(string fieldName, string likeValue) 
         {
             throw new NotSupportedException("Can only be used in expressions");
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs
index 66f43016a..24f486986 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs
@@ -855,6 +855,10 @@ namespace SqlSugar
                     case "ToSingle":
                         return this.Context.DbMehtods.ToSingle(model);
                     default:
+                        if (typeof(IDbMethods).GetMethods().Any(it => it.Name == name))
+                        {
+                            return this.Context.DbMehtods.GetType().GetMethod(name).Invoke(this.Context.DbMehtods,new object[] { model});
+                        }
                         break;
                 }
             }
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
index cad924df0..0010210db 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
@@ -54,6 +54,11 @@ namespace SqlSugar
     }
     public partial class DmMethod : DefaultDbMethod, IDbMethods
     {
+        public override string WeekOfYear(MethodCallExpressionModel mode)
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $"TO_NUMBER(TO_CHAR({parameterNameA}, 'WW')) ";
+        }
         public override string ParameterKeyWord { get; set; } = ":";
         public override string GetStringJoinSelector(string result, string separator)
         {
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
index 486e03498..d7a04e770 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
@@ -17,6 +17,11 @@ namespace SqlSugar
     }
     public class MySqlMethod : DefaultDbMethod, IDbMethods
     {
+        public override string WeekOfYear(MethodCallExpressionModel mode)
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $" WEEK({parameterNameA})  ";
+        }
         public override string GetStringJoinSelector(string result, string separator)
         {
             return $"group_concat({result}  separator '{separator}') ";
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
index 80366fccb..6b18de28a 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
@@ -76,6 +76,11 @@ namespace SqlSugar
     }
     public partial class OracleMethod : DefaultDbMethod, IDbMethods
     {
+        public override string WeekOfYear(MethodCallExpressionModel mode)
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $"TO_NUMBER(TO_CHAR({parameterNameA}, 'WW')) ";
+        }
         public override string BitwiseAnd(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
index 07a735a67..8b098389e 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
@@ -20,6 +20,11 @@ namespace SqlSugar
     }
     public partial class SqlServerMethod : DefaultDbMethod, IDbMethods
     {
+        public override string WeekOfYear(MethodCallExpressionModel mode)
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $"DATEPART(WEEK, {parameterNameA})  ";
+        }
         public override string GetTableWithDataBase(string dataBaseName, string tableName)
         {
             return $"{dataBaseName}.dbo.{tableName}";
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteExpressionContext.cs
index c1277a009..25de02e15 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteExpressionContext.cs
@@ -17,6 +17,11 @@ namespace SqlSugar
     }
     public class SqliteMethod : DefaultDbMethod, IDbMethods
     {
+        public override string WeekOfYear(MethodCallExpressionModel mode)
+        {
+            var parameterNameA = mode.Args[0].MemberName;
+            return $"STRFTIME('%W', {parameterNameA}) ";
+        }
         public override string Equals(MethodCallExpressionModel model)
         {
             var  result= base.Equals(model);