diff --git a/README.md b/README.md
index 05714c1..b2283ac 100644
--- a/README.md
+++ b/README.md
@@ -177,7 +177,9 @@ The benchmark ensures the caller has sufficient machine resources **overwhelming
 ![image](docs/images/thrift_tp999.png)
 
 #### Protobuf
-Note: the message protocols used by each framework are different. About GRPC, the next part has comparison.
+Note: 
+1. The message protocols used by each framework are different. About GRPC, the next part has comparison.
+2. Some frameworks (such as ARPC) use multiplexing, so should refer to the result of KITEX-MUX for comparison.
 
 ![image](docs/images/pb_qps.png)
 ![image](docs/images/pb_tp99.png)
diff --git a/README_cn.md b/README_cn.md
index a7c73c1..c336c37 100644
--- a/README_cn.md
+++ b/README_cn.md
@@ -175,7 +175,9 @@ sleep=0
 ![image](docs/images/thrift_tp999.png)
 
 #### Protobuf
-注意：各框架使用的消息协议不同，gRPC 下面有专门的对比
+注意：
+1. 各框架使用的消息协议不同，gRPC 下面有专门的对比
+2. 部分框架(如 ARPC) 采用了多路复用方式访问，需要参考 KITEX-MUX 结果对比
 
 ![image](docs/images/pb_qps.png)
 ![image](docs/images/pb_tp99.png)
diff --git a/scripts/reports/diff.py b/scripts/reports/diff.py
index 417f2b6..cd91cb7 100644
--- a/scripts/reports/diff.py
+++ b/scripts/reports/diff.py
@@ -23,6 +23,7 @@ class bcolors:
 def diff(from_csv, to_csv):
     from_reader = list(csv.reader(open(from_csv)))
     to_reader = csv.reader(open(to_csv))
+    title = ['Kind', 'Concurrency', 'Data Size', 'QPS', 'P99', 'P999']
     results = []
 
     for line_num, line in enumerate(to_reader):
@@ -37,6 +38,8 @@ def diff(from_csv, to_csv):
 
         results.append(result)
 
+    results.sort(key=lambda result: result[0])
+    results.insert(0, title)
     print_csv(results)
 
 
@@ -48,7 +51,6 @@ def diff_cell(old, now):
 
 
 def print_csv(results):
-    results.sort(key=lambda result: result[0])
     cell_size = 15
     for line in results:
         result = []