Inverse query system and guide system for parking lot based on two-dimension code

The invention discloses an inverse query system for a parking lot based on a two-dimension code. The parking lot comprises a plurality of parking spots and two-dimension code identifying modules corresponding to the parking spots, wherein the two-dimension code identifying modules identify the address information of the parking spots by two-dimensional codes, so that the address information represented by the two-dimensional codes correspond to the actual address information of the parking spots; and a user acquires the address information of the parking spots by the two-dimensional codes. According to the inverse query system for the parking lot based on the two-dimension code, the information codes of the parking sports in a region are unique and two-dimensional codes containing information, path and the like of the parking spots are generated; and the code of each parking spot in the region is unique, so that the query is very clear; and furthermore, the two-dimensional codes are acquired, identified or sent by a mobile terminal, so that the inverse query of the information of the parking spots is implemented conveniently, and an information indication and guide service for the parking lot is also implemented by additional facilities, and therefore, not only the utilization rate of the parking lot is improved, but also much convenience is brought to the user. The invention further discloses a guide system for the parking spot based on the two-dimensional code.