diff --git a/kernel/common/los_hilog.c b/kernel/common/los_hilog.c
index 1da79321..8731ad83 100644
--- a/kernel/common/los_hilog.c
+++ b/kernel/common/los_hilog.c
@@ -39,7 +39,7 @@
 #include "los_vm_lock.h"
 #include "user_copy.h"
 
-#define HILOG_BUFFER 1024
+#define HILOG_BUFFER 4096
 #define DRIVER_MODE 0666
 #define HILOG_DRIVER "/dev/hilog"