diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index 9e40aa4869c539..0387a26e007a58 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -1171,8 +1171,8 @@ public static double getHotValueThreshold() {
     public int localExchangeFreeBlocksLimit = 4;
 
     @VarAttrDef.VarAttr(name = MIN_SCANNERS_CONCURRENCY, needForward = true, description = "The min concurrency of "
-            + "Scanner, default 1")
-    public int minScannersConcurrency = 1;
+            + "Scanner, default 4")
+    public int minScannersConcurrency = 4;
 
     @VarAttrDef.VarAttr(name = MIN_FILE_SCANNERS_CONCURRENCY, needForward = true, description = "The min concurrency "
             + "of Remote Scanner, default 1")