Highway chain collision early warning method and system

The invention provides a highway chain collision early warning method and system. According to the method and system, a smart device on a vehicle collects and periodically sends the acceleration, speed, position information, accident information, return-to-normal information and abnormal information of the current vehicle to a server end; and the server end is used for receiving the acceleration,speed, position information, abnormal information and accident information of the vehicle sent by the smart device in real time, judging whether a traffic accident has occurred on the basis of the position information, accident information, and mutual communication information with the vehicle, and sending early warning information to the smart device when judging that a traffic accident has occurred. With the method and system of the invention adopted, the smart device can be additionally arranged on the vehicle so as to perform early warning; and a mobile smart device, such as a mobile phone, that is almost universa