diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
index 0e388c5db3..4be7f7a454 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
@@ -25,7 +25,6 @@ import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -40,7 +39,6 @@ public class Ceil extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
index bb0f6f0216..7102cb948d 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
@@ -25,7 +25,6 @@ import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -40,7 +39,6 @@ public class Dceil extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
index ec2039e121..df9f7bbb93 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
@@ -25,7 +25,6 @@ import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -40,7 +39,6 @@ public class Dfloor extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
index bb2502e8c9..29fe1516fb 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
@@ -24,7 +24,6 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -39,8 +38,6 @@ public class Dround extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
index 9e9f2c7d7b..e6b60cb791 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
@@ -25,7 +25,6 @@ import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -40,7 +39,6 @@ public class Floor extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
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 7f0e266acc..ac7afc7774 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
@@ -24,7 +24,6 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -39,8 +38,6 @@ public class Round extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, 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 5697ae277e..a7b0f50e8b 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
@@ -24,7 +24,6 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -39,8 +38,6 @@ public class RoundBankers extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
index 83af5293cd..fbf3a59b29 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
@@ -25,7 +25,6 @@ import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.BinaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
 import org.apache.doris.nereids.types.DecimalV3Type;
-import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
@@ -40,7 +39,6 @@ public class Truncate extends ScalarFunction
         implements BinaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
             FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
diff --git a/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/UdfTest.java b/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/UdfTest.java
index 35cb8ba14d..d068bb6c17 100644
--- a/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/UdfTest.java
+++ b/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/UdfTest.java
@@ -34,6 +34,7 @@ import org.apache.doris.nereids.trees.expressions.literal.TinyIntLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.VarcharLiteral;
 import org.apache.doris.nereids.types.DateTimeV2Type;
 import org.apache.doris.nereids.types.DateV2Type;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 import org.apache.doris.nereids.util.PlanChecker;
@@ -145,7 +146,7 @@ public class UdfTest extends TestWithFeService implements PlanPatternMatchSuppor
                                 new VarcharLiteral("day")),
                         new Cast(new Add(
                                 new Multiply(
-                                        new Floor(new Divide(
+                                        new Floor(new Cast(new Divide(
                                                 new Cast(
                                                         new Hour(new Cast(new VarcharLiteral("2023-05-20 12:23:45"), DateTimeV2Type.SYSTEM_DEFAULT)),
                                                         DoubleType.INSTANCE
@@ -153,11 +154,11 @@ public class UdfTest extends TestWithFeService implements PlanPatternMatchSuppor
                                                 new Divide(
                                                         new Cast(new TinyIntLiteral(((byte) 24)), DoubleType.INSTANCE),
                                                         new Cast(new IntegerLiteral(((byte) 3)), DoubleType.INSTANCE)
-                                                ))
+                                                )), DecimalV3Type.createDecimalV3Type(30, 15))
                                         ),
-                                        new Cast(new TinyIntLiteral(((byte) 1)), DoubleType.INSTANCE)
+                                        new Cast(new TinyIntLiteral(((byte) 1)), DecimalV3Type.createDecimalV3Type(3, 0))
                                 ),
-                                new Cast(new TinyIntLiteral(((byte) 1)), DoubleType.INSTANCE)
+                                new Cast(new TinyIntLiteral(((byte) 1)), DecimalV3Type.createDecimalV3Type(33, 0))
                         ), IntegerType.INSTANCE)
                 ),
                 new VarcharLiteral("%Y%m%d:%H")
diff --git a/regression-test/data/nereids_function_p0/scalar_function/D.out b/regression-test/data/nereids_function_p0/scalar_function/D.out
index 48a586d5b7..cbf4d8f532 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/D.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/D.out
@@ -2234,32 +2234,32 @@ Monday
 
 -- !sql_dceil_Double --
 \N
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-2.0
-2.0
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
 
 -- !sql_dceil_Double_notnull --
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-2.0
-2.0
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
 
 -- !sql_dceil_DecimalV3S1 --
 \N
@@ -2495,32 +2495,32 @@ Monday
 
 -- !sql_dfloor_Double --
 \N
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
 
 -- !sql_dfloor_Double_notnull --
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
 
 -- !sql_dfloor_DecimalV3S1 --
 \N
@@ -2761,12 +2761,12 @@ Monday
 -0.5228787452803376
 -0.3979400086720376
 -0.3010299956639812
--0.22184874961635637
+-0.2218487496163564
 -0.1549019599857432
 -0.09691001300805639
 -0.045757490560675115
 0.0
-0.04139268515822507
+0.04139268515822508
 0.07918124604762482
 
 -- !sql_dlog10_Double_notnull --
@@ -2775,12 +2775,12 @@ Monday
 -0.5228787452803376
 -0.3979400086720376
 -0.3010299956639812
--0.22184874961635637
+-0.2218487496163564
 -0.1549019599857432
 -0.09691001300805639
 -0.045757490560675115
 0.0
-0.04139268515822507
+0.04139268515822508
 0.07918124604762482
 
 -- !sql_domain_String --
@@ -2872,61 +2872,61 @@ Monday
 
 -- !sql_dround_Double --
 \N
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_dround_Double_notnull --
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_dround_Double_Integer --
 \N
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_dround_Double_Integer_notnull --
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_dround_DecimalV3S1 --
 \N
diff --git a/regression-test/data/nereids_function_p0/scalar_function/R.out b/regression-test/data/nereids_function_p0/scalar_function/R.out
index 3145c2c6dc..9c7be851d5 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/R.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/R.out
@@ -436,61 +436,61 @@ string3
 
 -- !sql_round_Double --
 \N
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_round_Double_notnull --
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_round_Double_Integer --
 \N
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_round_Double_Integer_notnull --
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_round_DecimalV3S1 --
 \N
@@ -668,61 +668,61 @@ string3
 
 -- !sql_round_bankers_Double --
 \N
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_round_bankers_Double_notnull --
-0.0
-0.0
-0.0
-0.0
-0.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
-1.0
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
 
 -- !sql_round_bankers_Double_Integer --
 \N
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_round_bankers_Double_Integer_notnull --
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-1.1
-1.2
+0.10
+0.20
+0.30
+0.40
+0.50
+0.60
+0.70
+0.80
+0.90
+1.00
+1.10
+1.20
 
 -- !sql_round_bankers_DecimalV3S1 --
 \N
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 155e438c9e..c126a6dd55 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
@@ -12,9 +12,9 @@
 10.12
 
 -- !truncate --
-1.0	1989.0	1001.0	123.1	0.1	6.3
-2.0	1986.0	1001.0	1243.5	20.2	789.2
-3.0	1989.0	1002.0	24453.3	78945.0	3654.0
+1	1989	1001	123.1	0.1	6.3
+2	1986	1001	1243.5	20.2	789.2
+3	1989	1002	24453.3	78945.0	3653.9
 
 -- !select --
 16	16	16
@@ -99,10 +99,10 @@
 247.14	469.36	691.58
 
 -- !query --
-200	500	700
+200.0	500.0	700.0
 
 -- !query --
-0	0	0
+0.0	0.0	0.0
 
 -- !query --
 247.136	469.358	691.579
@@ -114,4 +114,5 @@
 200.000	500.000	700.000
 
 -- !query --
-0.000	0.000	0.000
\ No newline at end of file
+0.000	0.000	0.000
+