diff --git a/fe/src/main/java/org/apache/doris/analysis/CastExpr.java b/fe/src/main/java/org/apache/doris/analysis/CastExpr.java
index ba1c81977e..2f78e15a9b 100644
--- a/fe/src/main/java/org/apache/doris/analysis/CastExpr.java
+++ b/fe/src/main/java/org/apache/doris/analysis/CastExpr.java
@@ -176,7 +176,7 @@ public class CastExpr extends Expr {
         Type childType = getChild(0).getType();
 
         // this cast may result in loss of precision, but the user requested it
-        if (childType.equals(type)) {
+        if (childType.matchesType(type)) {
             noOp = true;
             return;
         }