Vehicle looking-up method and system in parking lot

The invention discloses a vehicle looking-up method in a parking lot. The vehicle looking-up method comprises the following steps: associating and binding a wechat account with a license plate number through a wechat terminal, and storing to a server; associating and binding a parking lot planar graph and the position information of a parking space with the license plate number of a vehicle at the parking space through a parking lot terminal, and storing into the server; uploading the current position information and the wechat account to the server through the wechat terminal; looking up the corresponding license plate number according to the wechat account sent by the wechat terminal by the server, and looking up the position information of the parking space according to the license plate number; enabling the server to acquire the current position information sent by the wechat terminal, and calculate the optimal route of the current position to the parking space position according to the stored parking lot planar graph and the position information of the parking space, and pushing the parking lot planar graph of the optimal route to the wechat terminal. According to the vehicle looking-up method in a parking lot, a vehicle owner can conveniently and rapidly look up the parked vehicle in the parking lot, and the time of the vehicle owner can be saved. The invention further provides a parking lot vehicle looking-up system in a parking lot.