diff --git a/library/src/main/java/com/qiniu/android/dns/dns/DnsResponse.java b/library/src/main/java/com/qiniu/android/dns/dns/DnsResponse.java
index 2479033..efe1c22 100644
--- a/library/src/main/java/com/qiniu/android/dns/dns/DnsResponse.java
+++ b/library/src/main/java/com/qiniu/android/dns/dns/DnsResponse.java
@@ -201,8 +201,7 @@ private String readData(int recordType, int from, int length) throws IOException
                     StringBuilder builder = new StringBuilder();
                     for (int i = 0; i < 16; i += 2) {
                         builder.append(i > 0 ? ":" : "");
-                        builder.append(readRecordDataInt8(from + i));
-                        builder.append(readRecordDataInt8(from + i + 1));
+                        Integer.toHexString(readRecordDataInt16(from + i));
                     }
                     dataString = builder.toString();
                 }