diff --git a/backends-clickhouse/src/main/scala/io/glutenproject/execution/CHHashAggregateExecTransformer.scala b/backends-clickhouse/src/main/scala/io/glutenproject/execution/CHHashAggregateExecTransformer.scala
index d25988a7deec..5a1a6dd0aa45 100644
--- a/backends-clickhouse/src/main/scala/io/glutenproject/execution/CHHashAggregateExecTransformer.scala
+++ b/backends-clickhouse/src/main/scala/io/glutenproject/execution/CHHashAggregateExecTransformer.scala
@@ -73,19 +73,6 @@ case class CHHashAggregateExecTransformer(
 
   protected val modes: Seq[AggregateMode] = aggregateExpressions.map(_.mode).distinct
 
-  override protected def checkType(dataType: DataType): Boolean = {
-    dataType match {
-      case BooleanType | ByteType | ShortType | IntegerType | LongType | FloatType | DoubleType |
-          StringType | TimestampType | DateType | BinaryType =>
-        true
-      case _: StructType => true
-      case d: DecimalType => true
-      case a: ArrayType => true
-      case n: NullType => true
-      case other => false
-    }
-  }
-
   override def doTransform(context: SubstraitContext): TransformContext = {
     val childCtx = child.asInstanceOf[TransformSupport].doTransform(context)
     val operatorId = context.nextOperatorId(this.nodeName)