The invention discloses a vehicle counting method based on movement track, and relates to the field of traffic detection. The method of the invention comprises the following steps: stable feature points are selected and tracked; clustering is carried out according to the change of relationship between the same-time relative distances of the track of the stable feature points in a real space; and the count value of a vehicle counter is not updated when the variance of the same-time relative distances is smaller than a preset threshold, and 1 is added to the count value of the vehicle counter when the variance of the same-time relative distances is greater than the preset threshold. According to the invention, the vehicle track in a shot road video image is extracted and processed to obtain the relative distances of the track at the same time, and the number of vehicles in the video image is determined according to the change relationship between the same-time relative distances. Therefore, the influence of the environment in the vehicle counting process is avoided, the limitation that only vehicles of a single model can be counted is eliminated, and the precision and efficiency of vehicle counting are improved.