diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBConfig.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBConfig.java
index 8e6768cb0060..eb4076a31416 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBConfig.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBConfig.java
@@ -1124,7 +1124,7 @@ public class IoTDBConfig {
    */
   private String RateLimiterType = "FixedIntervalRateLimiter";
 
-  private CompressionType WALCompressionAlgorithm = CompressionType.LZ4;
+  private CompressionType WALCompressionAlgorithm = CompressionType.UNCOMPRESSED;
 
   IoTDBConfig() {}