diff --git a/docs/en/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md b/docs/en/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
index c5d5c7d10b..c8f228a80b 100644
--- a/docs/en/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
+++ b/docs/en/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
@@ -48,7 +48,7 @@ DECIMALV3 has a very complex set of type inference rules. For different expressi
 #### Arithmetic Expressions
 
 * Plus / Minus: DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(max(a - b, x - y) + max(b, y), max(b, y)). That is, the integer part and the decimal part use the larger value of the two operands respectively.
-* Multiply: DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(max(a, x), max(b, y)).
+* Multiply: DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(a + x, b + y).
 * Divide: DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(a + y, b).
 
 #### Aggregation functions
diff --git a/docs/zh-CN/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md b/docs/zh-CN/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
index 4d238ddc70..ff9d64c472 100644
--- a/docs/zh-CN/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
+++ b/docs/zh-CN/docs/sql-manual/sql-reference/Data-Types/DECIMALV3.md
@@ -46,7 +46,7 @@ DECIMALV3有一套很复杂的类型推演规则，针对不同的表达式，
 #### 四则运算
 
 * 加法 / 减法：DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(max(a - b, x - y) + max(b, y), max(b, y))，即整数部分和小数部分都分别使用两个操作数中较大的值。
-* 乘法：DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(max(a, x), max(b, y))。
+* 乘法：DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(a + x, b + y)。
 * 除法：DECIMALV3(a, b) + DECIMALV3(x, y) -> DECIMALV3(a + y, b)。
 
 #### 聚合运算
diff --git a/fe/fe-core/src/main/java/org/apache/doris/catalog/ScalarType.java b/fe/fe-core/src/main/java/org/apache/doris/catalog/ScalarType.java
index e97471f73d..3cd713b507 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/catalog/ScalarType.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/catalog/ScalarType.java
@@ -1022,9 +1022,13 @@ public class ScalarType extends Type {
         }
 
         if (t1.isDecimalV3() && t2.isDecimalV3()) {
-            return ScalarType.createDecimalV3Type(Math.max(t1.decimalPrecision() - t1.decimalScale(),
-                            t2.decimalPrecision() - t2.decimalScale()) + Math.max(t1.decimalScale(),
-                            t2.decimalScale()), Math.max(t1.decimalScale(), t2.decimalScale()));
+            ScalarType finalType = ScalarType.createDecimalV3Type(Math.max(t1.decimalPrecision() - t1.decimalScale(),
+                    t2.decimalPrecision() - t2.decimalScale()) + Math.max(t1.decimalScale(),
+                    t2.decimalScale()), Math.max(t1.decimalScale(), t2.decimalScale()));
+            if (finalType.getPrecision() > MAX_PRECISION) {
+                finalType = ScalarType.createDecimalV3Type(MAX_PRECISION, finalType.getScalarScale());
+            }
+            return finalType;
         }
 
         PrimitiveType smallerType =
diff --git a/regression-test/data/datatype_p0/decimalv3/test_arithmetic_expressions.out b/regression-test/data/datatype_p0/decimalv3/test_arithmetic_expressions.out
new file mode 100644
index 0000000000..a8d9df8d8d
--- /dev/null
+++ b/regression-test/data/datatype_p0/decimalv3/test_arithmetic_expressions.out
@@ -0,0 +1,19 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !select_all --
+1.100000000000000000	1.200000000000000000	1.300000000000000000
+1.200000000000000000	1.200000000000000000	1.300000000000000000
+1.500000000000000000	1.200000000000000000	1.300000000000000000
+
+-- !select --
+1.320000000000000000000000000000000000
+1.440000000000000000000000000000000000
+1.800000000000000000000000000000000000
+
+-- !select --
+1.300000000000000000000000000000000000
+1.300000000000000000000000000000000000
+1.300000000000000000000000000000000000
+1.320000000000000000000000000000000000
+1.440000000000000000000000000000000000
+1.800000000000000000000000000000000000
+
diff --git a/regression-test/suites/datatype_p0/decimalv3/test_arithmetic_expressions.groovy b/regression-test/suites/datatype_p0/decimalv3/test_arithmetic_expressions.groovy
new file mode 100644
index 0000000000..44cd313fa0
--- /dev/null
+++ b/regression-test/suites/datatype_p0/decimalv3/test_arithmetic_expressions.groovy
@@ -0,0 +1,49 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite("test_arithmetic_expressions") {
+
+    def table1 = "test_arithmetic_expressions"
+
+    sql "drop table if exists ${table1}"
+
+    sql """
+    CREATE TABLE IF NOT EXISTS `${table1}` (
+      `k1` decimalv3(38, 18) NULL COMMENT "",
+      `k2` decimalv3(38, 18) NULL COMMENT "",
+      `k3` decimalv3(38, 18) NULL COMMENT ""
+    ) ENGINE=OLAP
+    COMMENT "OLAP"
+    DISTRIBUTED BY HASH(`k1`, `k2`, `k3`) BUCKETS 8
+    PROPERTIES (
+    "replication_allocation" = "tag.location.default: 1",
+    "in_memory" = "false",
+    "storage_format" = "V2"
+    )
+    """
+
+    sql """insert into ${table1} values(1.1,1.2,1.3),
+            (1.2,1.2,1.3),
+            (1.5,1.2,1.3)
+    """
+    qt_select_all "select * from ${table1} order by k1"
+
+    qt_select "select k1 * k2 from ${table1} order by k1"
+    qt_select "select * from (select k1 * k2 from ${table1} union all select k3 from ${table1}) a order by 1"
+
+    sql "drop table if exists ${table1}"
+}