Fuente: Wipo "BigData" The invention relates to the field of the Internet, and particularly to a vehicle-mounted auxiliary positioning system based on big data. By collecting image information surrounding a vehicle, automatically extracting and recognizing useful text and orientation information, inputting the useful text and orientation information into a cloud server, and matching the corresponding position range information in the map data by the could server to assist in correcting the current positioning deviation, the effect of double verification of automatic positioning and environment matching is achieved.The above process is automatically completed by the system, having fast recognition speed and high verification reliability.