Alarm processing is fundamental function in Telematics System. AJAX pulling is common method in traditional system. But AJAX pulling is not real-time communication, and the server suffers unnecessary requests. In this study, we design a telematics alarm pushing system based on Websocket and Redis. Then, we test this system. The results show that Websocket is an ideal technology for alarm pushing. It improves network throughput, reduces latency and network traffic.