Intrusion detection is a new technology which developed with the network technology and information security technology. Accompanied with the convenience from the network, it still caused the problem of information security. It becomes an important research project that how to use the service of the network and reduce the loss in the network information security. It designs a new intrusion detection system based on existing environment, and brings honeypot into this system in this paper, at last, it improves the intrusion response module.