diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
index 0f03c7dcea..1267ae92ff 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
@@ -22,7 +22,6 @@ import org.apache.doris.nereids.trees.expressions.Expression;
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
-import org.apache.doris.nereids.types.BigIntType;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -38,7 +37,7 @@ public class Round extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(BigIntType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
     );
 
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
index 2ea0401bc3..efe4eca6eb 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
@@ -22,7 +22,6 @@ import org.apache.doris.nereids.trees.expressions.Expression;
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
-import org.apache.doris.nereids.types.BigIntType;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -38,7 +37,7 @@ public class RoundBankers extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(BigIntType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
     );
 
diff --git a/regression-test/data/query_p0/sql_functions/math_functions/test_round.out b/regression-test/data/query_p0/sql_functions/math_functions/test_round.out
index 5f7a55cf92..aff17c5dd0 100644
--- a/regression-test/data/query_p0/sql_functions/math_functions/test_round.out
+++ b/regression-test/data/query_p0/sql_functions/math_functions/test_round.out
@@ -26,3 +26,15 @@
 -- !select --
 16.020	16.02000	16.02000
 
+-- !nereids_round_arg1 --
+10.0
+
+-- !nereids_round_arg2 --
+10.12
+
+-- !nereids_round_bankers_arg1 --
+10.0
+
+-- !nereids_round_bankers_arg2 --
+10.12
+
diff --git a/regression-test/suites/query_p0/sql_functions/math_functions/test_round.groovy b/regression-test/suites/query_p0/sql_functions/math_functions/test_round.groovy
index 0fec9dce5f..9d6892a40e 100644
--- a/regression-test/suites/query_p0/sql_functions/math_functions/test_round.groovy
+++ b/regression-test/suites/query_p0/sql_functions/math_functions/test_round.groovy
@@ -37,4 +37,14 @@ suite("test_round") {
     qt_select """ SELECT truncate(col1, 2), truncate(col2, 2), truncate(col3, 2) FROM `${tableName}`; """
     qt_select """ SELECT round_bankers(col1, 2), round_bankers(col2, 2), round_bankers(col3, 2) FROM `${tableName}`; """
     sql """ DROP TABLE IF EXISTS `${tableName}` """
+
+    sql "SET enable_nereids_planner=true"
+    sql "SET enable_vectorized_engine=true"
+    sql "SET enable_fallback_to_original_planner=false"
+
+    qt_nereids_round_arg1 "SELECT round(10.12345)"
+    qt_nereids_round_arg2 "SELECT round(10.12345, 2)"
+    qt_nereids_round_bankers_arg1 "SELECT round_bankers(10.12345)"
+    qt_nereids_round_bankers_arg2 "SELECT round_bankers(10.12345, 2)"
+
 }