An example of a vehicle assistance method includes obtaining a surroundings image captured by at least one camera. The method then controls a converting unit to convert the obtained surroundings image into a birds-eye view. Next, the method determines a panorama area according to a rightmost road marker or a leftmost road marker, determines a detection area according to whether or not one or more road markers exclusive the rightmost road marker and the leftmost road marker appear in the panorama area, and further determine whether one or more objects appear in the detection area. If yes, the method then obtains the humidity of air detected by a humidity sensor. Next, the method determines a camera corresponding to the birds-eye view when the obtained humidity of air is greater than the preset humidity value, and controls a driving device to turn on a pair of lights.