diff --git a/frameworks/libhilog/include/hilog_common.h b/frameworks/libhilog/include/hilog_common.h
index 7993dc6a68c2f662b5725e3b101cc254b4509be2..b24abd5a15a70d2c1fdba960f691b3eaf2a8ed00 100644
--- a/frameworks/libhilog/include/hilog_common.h
+++ b/frameworks/libhilog/include/hilog_common.h
@@ -33,7 +33,7 @@
 #define RET_FAIL (-1)
 #define MAX_JOBS (10)
 constexpr size_t MIN_BUFFER_SIZE = (64 * 1024);
-constexpr size_t MAX_BUFFER_SIZE = (512 * 1024 * 1024);
+constexpr size_t MAX_BUFFER_SIZE = (16 * 1024 * 1024);
 constexpr uint32_t MAX_PERSISTER_BUFFER_SIZE = 64 * 1024;
 constexpr uint32_t MIN_LOG_FILE_SIZE = MAX_PERSISTER_BUFFER_SIZE;
 constexpr uint32_t MAX_LOG_FILE_SIZE = (512 * 1024 * 1024);
diff --git a/services/hilogtool/main.cpp b/services/hilogtool/main.cpp
index 9a941c70c1196ceddeb4de6dc488c7439c05ede1..ddc77ccfe7e76eb9a0c0cab50b07a96bbae051be 100644
--- a/services/hilogtool/main.cpp
+++ b/services/hilogtool/main.cpp
@@ -121,7 +121,7 @@ static void BufferHelper()
     << "-G <size>, --buffer-size=<size>" << endl
     << "  Set hilogd buffer size, <size> could be number or number with unit." << endl
     << "  Unit could be: B/K/M/G which represents Byte/Kilobyte/Megabyte/Gigabyte." << endl
-    << "  <size> range: [" << Size2Str(MIN_BUFFER_SIZE) << "," << Size2Str(MIN_BUFFER_SIZE) << "]." << endl
+    << "  <size> range: [" << Size2Str(MIN_BUFFER_SIZE) << "," << Size2Str(MAX_BUFFER_SIZE) << "]." << endl
     << "  Advanced option:" << endl
     << "  -t <type>, --type=<type>" << endl
     << "    Set specific type/types log buffer size with format: type1,type2,type3" << endl