In order to solve the problems of high energy consumption of imaging positioning and complex of non-imaging positioning equipment in indoor visible light positioning, an indoor visible light location method based on mobile phone ambient light sensor is proposed in this paper. Firstly, the original frequency of the signal sent by the light source are solved by using the frequency folding effect and the light source label recognition algorithm. Then through the light source frequency coordinate database established in advance to obtain the light source position, so as to obtain the equipment position. The experiment result shows that this method can realize the light source identification and equipment positioning in the light source coverage area on the premise of low power consumption and low calculation, the positioning accuracy depends on the light source density.