diff --git a/fe/fe-core/src/main/java/org/apache/doris/catalog/PartitionKey.java b/fe/fe-core/src/main/java/org/apache/doris/catalog/PartitionKey.java
index f9640ccae14023..29bfda8b201d20 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/catalog/PartitionKey.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/catalog/PartitionKey.java
@@ -373,15 +373,14 @@ public String toSql() {
             if (expr == MaxLiteral.MAX_VALUE || expr.isNullLiteral()) {
                 value = expr.toSql();
                 sb.append(value);
-                continue;
             } else {
                 value = "\"" + expr.getRealValue() + "\"";
                 if (expr instanceof DateLiteral) {
                     DateLiteral dateLiteral = (DateLiteral) expr;
                     value = dateLiteral.toSql();
                 }
+                sb.append(value);
             }
-            sb.append(value);
 
             if (keys.size() - 1 != i) {
                 sb.append(", ");
diff --git a/fe/fe-core/src/test/java/org/apache/doris/catalog/PartitionKeyTest.java b/fe/fe-core/src/test/java/org/apache/doris/catalog/PartitionKeyTest.java
index affd5a4cc2c397..c6b45c0b136e61 100644
--- a/fe/fe-core/src/test/java/org/apache/doris/catalog/PartitionKeyTest.java
+++ b/fe/fe-core/src/test/java/org/apache/doris/catalog/PartitionKeyTest.java
@@ -268,4 +268,10 @@ public void testSerialization() throws Exception {
         dis.close();
         Files.deleteIfExists(path);
     }
+
+    @Test
+    public void testMaxValueToSql() throws Exception {
+        PartitionKey key = PartitionKey.createInfinityPartitionKey(allColumns, true);
+        Assert.assertEquals("(MAXVALUE, MAXVALUE, MAXVALUE, MAXVALUE, MAXVALUE, MAXVALUE, MAXVALUE)", key.toSql());
+    }
 }