diff --git a/plugin/business/doh/src/doh.cpp b/plugin/business/doh/src/doh.cpp
index fbd177c..259be99 100644
--- a/plugin/business/doh/src/doh.cpp
+++ b/plugin/business/doh/src/doh.cpp
@@ -1,6 +1,6 @@
 #include "logger.h"
 
-#define MAX_SCAN_RESULT 128
+#define MAX_SCAN_RESULT 16
 #define DOH_CTX_MAGIC_NUM 20200601
 
 #define REQ_METHOD_IS_GET(method) ((method == TFE_HTTP_METHOD_GET) ? 1 : 0)
@@ -182,7 +182,7 @@ static struct Maat_rule_t *doh_fetch_rule(Maat_rule_t *result, int result_num)
 	int i = 0;
 	Maat_rule_t *p_result = NULL;
 
-	for (i = 0; i < result_num; i++)
+	for (i = 0; i < result_num && i < MAX_SCAN_RESULT; i++)
 	{
 		if (p_result == NULL)
 		{
@@ -748,6 +748,7 @@ int doh_on_init(struct tfe_proxy *proxy)
 		TFE_LOG_INFO(NULL, "Doh disabled.");
 		goto success;
 	}
+	TFE_LOG_INFO(NULL, "Doh enabled.");
 
 	g_doh_conf->thread_num = tfe_proxy_get_work_thread_count();
 	g_doh_conf->local_logger = MESA_create_runtime_log_handle("./log/doh_pxy.log", g_doh_conf->local_level);
@@ -771,6 +772,7 @@ int doh_on_init(struct tfe_proxy *proxy)
 		TFE_LOG_ERROR(NULL, "Doh init maat failed.");
 		goto error;
 	}
+	TFE_LOG_INFO(g_doh_conf->local_logger, "Doh init success.");
 
 success:
 	return 0;