diff --git a/streampark-flink/streampark-flink-connector/streampark-flink-connector-doris/src/main/java/org/apache/streampark/flink/connector/doris/util/DorisDelimiterParser.java b/streampark-flink/streampark-flink-connector/streampark-flink-connector-doris/src/main/java/org/apache/streampark/flink/connector/doris/util/DorisDelimiterParser.java
index 1c804b7ae4..886c85246f 100644
--- a/streampark-flink/streampark-flink-connector/streampark-flink-connector-doris/src/main/java/org/apache/streampark/flink/connector/doris/util/DorisDelimiterParser.java
+++ b/streampark-flink/streampark-flink-connector/streampark-flink-connector-doris/src/main/java/org/apache/streampark/flink/connector/doris/util/DorisDelimiterParser.java
@@ -24,7 +24,7 @@ public class DorisDelimiterParser {
   private static final String HEX_STRING = "0123456789ABCDEF";
 
   public static String parse(String sp) throws RuntimeException {
-    if (sp == null || sp.length() == 0) {
+    if (sp == null || sp.isBlank()) {
       throw new RuntimeException("Delimiter can't be empty");
     }
     if (!sp.toUpperCase().startsWith("\\X")) {