diff --git a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
index 8b05bba33..f125f9a08 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
@@ -129,7 +129,17 @@ namespace SqlSugar
                 if (model is ConditionalModel)
                 {
                     var item = model as ConditionalModel;
-                    if (item.FieldName == $"[value=sql{UtilConstants.ReplaceKey}]") 
+                    if (item.CustomConditionalFunc != null) 
+                    {
+                        var colIndex = mainIndex + beginIndex;
+                        var colType = colIndex == 0 ? "" : "AND";
+                        var custom = item.CustomConditionalFunc.GetConditionalSql(item, colIndex);
+                        parameters.AddRange(custom.Value);
+                        builder.AppendFormat(" "+colType + " "+custom.Key);
+                        mainIndex++;
+                        continue;
+                    }
+                    else if (item.FieldName == $"[value=sql{UtilConstants.ReplaceKey}]") 
                     {
                         builder.Append(item.FieldValue);
                         continue;
diff --git a/Src/Asp.Net/SqlSugar/Entities/ConditionalModel.cs b/Src/Asp.Net/SqlSugar/Entities/ConditionalModel.cs
index c7dfbf306..1da3ef455 100644
--- a/Src/Asp.Net/SqlSugar/Entities/ConditionalModel.cs
+++ b/Src/Asp.Net/SqlSugar/Entities/ConditionalModel.cs
@@ -25,6 +25,14 @@ namespace SqlSugar
         public string FieldName { get; set; }
         public string FieldValue { get; set; }
         public string CSharpTypeName { get; set; }
+        
+
+        public ICustomConditionalFunc CustomConditionalFunc { get; set; }
+        public string CustomP1 { get; set; }
+        public string CustomP2 { get; set; }
+        public string CustomP3 { get; set; }
+        public string CustomP4 { get; set; }
+
         public ConditionalType ConditionalType { get; set; }
         [Newtonsoft.Json.JsonIgnoreAttribute]
         public Func<string,object> FieldValueConvertFunc { get; set; }
diff --git a/Src/Asp.Net/SqlSugar/Interface/ICustomConditionalFunc.cs b/Src/Asp.Net/SqlSugar/Interface/ICustomConditionalFunc.cs
new file mode 100644
index 000000000..b6fce1a38
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/Interface/ICustomConditionalFunc.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SqlSugar 
+{
+    public interface ICustomConditionalFunc
+    {
+        KeyValuePair<string, SugarParameter[]> GetConditionalSql(ConditionalModel  json,int index);
+    }
+}
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index 0a9f8fe1e..c3abbd9e0 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -138,6 +138,7 @@
     <Compile Include="ExpressionsToSql\Subquery\Items\SubSelectStringJoin.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubWithNoLock.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubEnableTableFilter.cs" />
+    <Compile Include="Interface\ICustomConditionalFunc.cs" />
     <Compile Include="Json2Sql\Entities\JsonDeleteResult.cs" />
     <Compile Include="Json2Sql\Entities\JsonInsertResult.cs" />
     <Compile Include="Json2Sql\Entities\JsonQueryResult.cs" />
diff --git a/Src/Asp.Net/SqlSugar/Utilities/DbExtensions.cs b/Src/Asp.Net/SqlSuga