Abstract: Recently, NAT(network address translation) technology has largely alleviated the shortage of IP resource problems, but creates a communication barrier between the hosts on the Internet, which limits the traditional remote control technology. This paper studies a number of issues focusing on P2P(peer to peer) traversing NAT equipment and firstly analyses the mainframe NAT traversal technology. On this basis, the remote control program is proposed and the program is achieved by JAVA language. The experimental results show that the program proposed in this paper can achieve remote control effectively.