diff --git a/platform/Kconfig b/platform/Kconfig
index 39357095131fb18ad67397f820457636b98dd4ce..937c0bcb80aa87e0ad42d922abe12622c2601d37 100644
--- a/platform/Kconfig
+++ b/platform/Kconfig
@@ -80,3 +80,19 @@ config HRTIMER_ENABLE
     help
       Enable High-resolution timer support
 
+config HILOG
+    tristate "Hilog support"
+    default y
+    help
+      hilog buffer manager.
+
+      Hilog is a simple log manager for OpenHarmonyOS.
+      log string write to /dev/hilog, and the hilog driver copy it
+      to the ring buffer. Ring buffer can be read from userspace.
+
+config HILOG_BUFFER_SIZE
+    int "hilog buffer size"
+    default 4096
+    help
+      Define the default ring buffer size of hilog
+
diff --git a/platform/los_hilog.c b/platform/los_hilog.c
index 6d9fbc6fb284463107ae140ce1370e69a40ccae1..22485d75fc21d88d3b256c53c45a0470f9b12b05 100644
--- a/platform/los_hilog.c
+++ b/platform/los_hilog.c
@@ -41,7 +41,7 @@
 #include "los_vm_lock.h"
 #include "user_copy.h"
 
-#define HILOG_BUFFER 4096
+#define HILOG_BUFFER LOSCFG_HILOG_BUFFER_SIZE
 #define DRIVER_MODE 0666
 #define HILOG_DRIVER "/dev/hilog"
 
@@ -255,6 +255,7 @@ static void HiLogCoverOldLog(size_t bufLen)
     int retval;
     struct HiLogEntry header;
     size_t totalSize = bufLen + sizeof(struct HiLogEntry);
+    int dropLogLines = 0;
 
     while (totalSize + g_hiLogDev.size > HILOG_BUFFER) {
         retval = HiLogReadRingBuffer((unsigned char *)&header, sizeof(header));
@@ -262,9 +263,13 @@ static void HiLogCoverOldLog(size_t bufLen)
             break;
         }
 
+        dropLogLines++;
         HiLogBufferDec(sizeof(header));
         HiLogBufferDec(header.len);
     }
+    if (dropLogLines > 0) {
+        dprintf("hilog ringbuffer full, drop %d line(s) log", dropLogLines);
+    }
 }
 
 int HiLogWriteInternal(const char *buffer, size_t bufLen)