针对在常规通信手段失效的情况下，事故车辆不能得到及时救护，而造成不应有的人员伤亡和财产损失，提出一种采用GPS 接收模块、射频收/发模块和嵌入式微控制器设计的自动呼救和导航装置，通过该装置邻近车辆可以迅速找到事故地点实施及时救助，可以在一定程度上挽救伤者生命。关键词：GPS;射频;嵌入式微控制器;交通事故;救助Abstract: Vehicle automatic alarming and navigation system is the result ofsolving the problem that the property loss and casualty due to untimely rescue in atraffic accident when general communication means can’t work normally. The systeminvents a kind of automatic alarming and navigation equipment which by using GPSreceiver module, RF receive and transmit module and embedded microcontroller.With the help of this equipment, vehicles nearby can find the place of the trafficaccident quickly, rescue the wounded in time and in a certain extent even save theirlives.Keywords: GPS; RF; embedded microcontroller; traffic accident; rescue