(Snifferpro is a famous network protocol analysis software. This paper uses its powerful traffic graphic system hosttable to monitor network traffic in real time. In terms of monitoring software, we chose the commonly used Nai company's snifferpro. In fact, many Internet cafe administrators have had relevant experience in monitoring the network: when there are problems in the network, or when exploring the network situation, they use P2P terminators, network law enforcement officers and other network monitoring software. Such software has a great advantage: you can query traffic without configuring port image (in fact, snifferpro can also work flexibly in such an environment).)