Based on the actual demand of the modern security, a set of remote positioning and monitoring terminal taking ARM as the platform is designed in this paper, which combines with GPS technology, GPRS technology and image acquisition technology. When detecting burst signal outside, such as strong impact or manual buttons were pressed, terminal transmits the GPS positioning information and the image information collected through the GPRS network to the monitoring center in real time, and sends alarm information to the user's mobile phone at the same time. The monitoring center can obtain the positioning data and the image information in real time by sending the inquiry instruction. This system has the advantages of low cost, high performance, high reliability, can realize the function of intelligent alarm, remote positioning and monitoring. The results of the actual operation indicate that the function of positioning and monitoring can meet the requirements of practical use.