diff --git a/be/src/common/config.h b/be/src/common/config.h
index d46d7abd3d7a0e..b8a01031848a69 100644
--- a/be/src/common/config.h
+++ b/be/src/common/config.h
@@ -553,7 +553,7 @@ CONF_mInt64(storage_flood_stage_left_capacity_bytes, "1073741824"); // 1GB
 // number of thread for flushing memtable per store
 CONF_Int32(flush_thread_num_per_store, "6");
 // number of thread for flushing memtable per store, for high priority load task
-CONF_Int32(high_priority_flush_thread_num_per_store, "1");
+CONF_Int32(high_priority_flush_thread_num_per_store, "6");
 
 // config for tablet meta checkpoint
 CONF_mInt32(tablet_meta_checkpoint_min_new_rowsets_num, "10");