Automobile wind speed test method and device

The invention discloses an automobile wind speed test method and device. The test method comprises the following steps: at least two position information acquisition modules are installed on an automobile; a wind speed and direction sensor is set on one side of a preset driving path of the automobile; the automobile drives at a preset speed along the preset driving path, the wind speed measured bythe wind speed and direction sensor and the position information measured by the position information acquisition modules are collected, and the actual automobile speed of the automobile is calculated based on the position information; the compensation wind speed Vr is obtained according to the preset automobile speed, the wind speed and the actual automobile speed; the sliding resistance coefficients Am, Bm, Cm, a0, a1, a2, a3 and a4 are obtained through least square fitting; the resistance coefficient CD(Y) of road sliding of the automobile is obtained; and the road sliding resistance Daeroof the automobile is obta