diff --git a/src/main/java/net/geedge/api/util/AdbUtil.java b/src/main/java/net/geedge/api/util/AdbUtil.java
index 61a66d3..5d9f370 100644
--- a/src/main/java/net/geedge/api/util/AdbUtil.java
+++ b/src/main/java/net/geedge/api/util/AdbUtil.java
@@ -588,7 +588,7 @@ public class AdbUtil {
             String pcapFilePath = "/data/local/tmp/capture_" + userId + "_" + packageName + "_" + taskId + ".pcap";
             CommandExec.execForProcess(AdbCommandBuilder.builder()
                     .serial(this.getSerial())
-                    .buildShellCommand(String.format("shell tcpdump not port %s -i nflog:%s -w %s &", this.vncPort, userId, pcapFilePath))
+                    .buildShellCommand(String.format("shell tcpdump -i nflog:%s -w %s &", userId, pcapFilePath))
                     .build());
         } else {
             log.info("[startTcpdump] [capture all package]");