diff --git a/aufs/core/sysmonitor.go b/aufs/core/sysmonitor.go
index d38c36d..2c711c3 100644
--- a/aufs/core/sysmonitor.go
+++ b/aufs/core/sysmonitor.go
@@ -2,7 +2,7 @@ package core
 
 import (
 	"aufs/proto/pb"
-	"encoding/json"
+	"encoding/base64"
 	"fmt"
 	"log"
 	"net/http"
@@ -108,19 +108,26 @@ func SysMonitor(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 	}
 
+	// ver:0821
+	// 输出proto
+	encdata := base64.StdEncoding.EncodeToString(hdinfo)
+	w.Header().Set("content-type", "application/x-protobuf")
+	w.Write([]byte(encdata))
+
 	// make json string
-	jsondata, err := json.Marshal(hdinfo)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-	}
-	w.Header().Set("Content-Type", "application/json")
+	// jsondata, err := json.Marshal(hdinfo)
+	// if err != nil {
+	// 	http.Error(w, err.Error(), http.StatusInternalServerError)
+	// }
+
+	// w.Header().Set("Content-Type", "application/json")
 
 	// 生成json数据
-	jsondata, err = json.Marshal(SysResp{
-		Status:  0,
-		Message: "success",
-		Data:    hdinfo,
-	})
+	// jsondata, err = json.Marshal(SysResp{
+	// 	Status:  0,
+	// 	Message: "success",
+	// 	Data:    hdinfo,
+	// })
 	//
-	w.Write(jsondata)
+	// w.Write(jsondata)
 }