diff --git a/services/hilogd/log_buffer.cpp b/services/hilogd/log_buffer.cpp
index af0539b4fba630da88b9bc17250ea27779151fb4..0effcc555d076b528cdce21f1158e3e235156fa8 100644
--- a/services/hilogd/log_buffer.cpp
+++ b/services/hilogd/log_buffer.cpp
@@ -31,10 +31,10 @@ namespace OHOS {
 namespace HiviewDFX {
 using namespace std;
 
-#define MAX_BUFFER_SIZE 4194304
+#define MAX_BUFFER_SIZE 41943040
 const float DROP_RATIO = 0.05;
-static int g_maxBufferSize = 4194304;
-static int g_maxBufferSizeByType[LOG_TYPE_MAX] = {1048576, 1048576, 1048576, 1048576};
+static int g_maxBufferSize = 41943040;
+static int g_maxBufferSizeByType[LOG_TYPE_MAX] = {10485760, 10485760, 10485760, 10485760};
 const int DOMAIN_STRICT_MASK = 0xd000000;
 const int DOMAIN_FUZZY_MASK = 0xdffff;
 const int DOMAIN_MODULE_BITS = 8;