diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
index ccbdc298f..dcdce1796 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/DefaultDbMethod.cs
@@ -716,6 +716,13 @@ namespace SqlSugar
         {
             return null;
         }
+        public virtual string JsonIndex(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter1 = model.Args[1];
+            return $"({parameter.MemberName}::json ->> {parameter1.MemberValue})";
+        }
+
 
         public virtual string JsonField(MethodCallExpressionModel model)
         {
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
index 254795a5a..2c20c793d 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/IDbMethods.cs
@@ -98,6 +98,7 @@ namespace SqlSugar
         string Exists(MethodCallExpressionModel model);
         string GetDateString(string dateValue,string format);
         string GetForXmlPath();
+        string JsonIndex(MethodCallExpressionModel model);
         string JsonField(MethodCallExpressionModel model);
         string JsonContainsFieldName(MethodCallExpressionModel model);
         string JsonArrayLength(MethodCallExpressionModel model);
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
index 2fded9d55..e6938665d 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
@@ -113,7 +113,10 @@ namespace SqlSugar
         {
             throw new NotSupportedException("Can only be used in expressions");
         }
-
+        public static string JsonIndex(object json, int jsonIndex)
+        {
+            throw new NotSupportedException("Can only be used in expressions");
+        }
         public static string JsonField(object json, string fieldName,string includeFieldName)
         {
             throw new NotSupportedException("Can only be used in expressions");
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
index 16d7a1efa..579124c4c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
@@ -17,6 +17,12 @@ namespace SqlSugar
     }
     public class MySqlMethod : DefaultDbMethod, IDbMethods
     {
+        public override string JsonIndex(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter1 = model.Args[1];
+            return $"JSON_UNQUOTE(JSON_EXTRACT({parameter.MemberName}, '$[{parameter1.MemberValue}]'))";
+        }
         public override string WeekOfYear(MethodCallExpressionModel mode)
         {
             var parameterNameA = mode.Args[0].MemberName;
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
index 1ebf004df..2f9ac5892 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerExpressionContext.cs
@@ -20,6 +20,12 @@ namespace SqlSugar
     }
     public partial class SqlServerMethod : DefaultDbMethod, IDbMethods
     {
+        public override string JsonIndex(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter1 = model.Args[1];
+            return $"JSON_VALUE({parameter.MemberName}, '$[{parameter1.MemberValue}]')";
+        }
         public override string CharIndexNew(MethodCallExpressionModel model)
         {
             return string.Format("CHARINDEX ({1},{0})", model.Args[0].MemberName, model.Args[1].MemberName);