As the development of computer network,IP becomes less as time goes along. Network address translation technique is used widely to resolve this problem,it can change IP domain to another IP domain.This paper gives an embedded system resolution based on S3C4510B.This resolution can also carry out the function of network address translation.First,We introduce hardware of system potentially,then analysis material implement of each function module.At last,We transplant embedded system on the hardware , test and analysis it.