A range-assisted visible light fingerprint localization (RAFL) method is proposed. Based on the ranging method, the position range of the positioning target is preliminarily determined according to the multiple sets of light sources. Then the bilinear interpolation algorithm is used to construct the localized area fingerprint and the fingerprint matching is carried out within the target range. The actual location of the target is finally obtained. The research results show that the proposed method has a strong anti-interference ability and can effectively improve the positioning accuracy.