Emergency braking warning method and device

The invention relates to the technical field of electronics, in particular to an emergency braking warning method and device. The vehicle acceleration of the current vehicle is obtained, if the absolute value of the vehicle acceleration is detected to be larger than a first threshold value, the vehicle speed change amount of the current vehicle is obtained in real time with the current moment as the starting point, and whether the current vehicle is in an emergency braking state or not is judged based on the vehicle acceleration and the vehicle speed change amount. And if it is determined that the current vehicle is in the emergency braking state, a rear steering lamp of the current vehicle is turned on. When the vehicle is braked emergently, accurate judgment is carried out through the combination of the vehicle acceleration and the vehicle speed change quantity, so that the rear steering lamp is turned on to prompt the rear vehicle, and the occurrence rate of traffic accidents is effectively reduced. 本发明涉及电