diff --git a/trunk/doc/KAFKA-AGuideToTheKafkaProtocol-160915-0553-82964.pdf b/trunk/doc/KAFKA-AGuideToTheKafkaProtocol-160915-0553-82964.pdf
new file mode 100644
index 000000000..b820fcd17
Binary files /dev/null and b/trunk/doc/KAFKA-AGuideToTheKafkaProtocol-160915-0553-82964.pdf differ
diff --git a/trunk/doc/readme.txt b/trunk/doc/readme.txt
index 6de58c500..df8994d11 100644
--- a/trunk/doc/readme.txt
+++ b/trunk/doc/readme.txt
@@ -66,5 +66,9 @@ arpa-internet-text-messages-rfc822.txt
 mp3规范：
 mp3.id3v2.3.0.pdf
     http://id3.org/id3v2.3.0
+    
+kafka协议:
+KAFKA-AGuideToTheKafkaProtocol-160915-0553-82964.pdf
+    https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol
 
 Winlin