diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/DecimalLiteral.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/DecimalLiteral.java
index 2d70117a1a4ec9..9d5649afded082 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/DecimalLiteral.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/DecimalLiteral.java
@@ -266,7 +266,7 @@ public String toSqlImpl() {
 
     @Override
     public String getStringValue() {
-        return value.toString();
+        return value.toPlainString();
     }
 
     @Override
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalLiteral.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalLiteral.java
index ea198d947aef65..4ffc92c634d709 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalLiteral.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalLiteral.java
@@ -110,4 +110,14 @@ public boolean equals(Object o) {
         DecimalLiteral literal = (DecimalLiteral) o;
         return Objects.equals(dataType, literal.dataType);
     }
+
+    @Override
+    public String toSql() {
+        return value.toPlainString();
+    }
+
+    @Override
+    public String toString() {
+        return toSql();
+    }
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalV3Literal.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalV3Literal.java
index ce80527340533d..c797e93cb6d673 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalV3Literal.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DecimalV3Literal.java
@@ -121,4 +121,14 @@ public boolean equals(Object o) {
         DecimalV3Literal literal = (DecimalV3Literal) o;
         return Objects.equals(dataType, literal.dataType);
     }
+
+    @Override
+    public String toSql() {
+        return value.toPlainString();
+    }
+
+    @Override
+    public String toString() {
+        return toSql();
+    }
 }