Abstract: Provided are an automatic parking method, device and system, relating to the technical field of vehicles. The method comprises: receiving operating information input by a user on the condition of receiving an automatic parking start instruction (101); generating a parking control instruction according to the operating information (102); and sending the parking control instruction to a vehicle for the vehicle to complete an automatic parking operation according to the parking control instruction (103). According to the disclosure, in the process of controlling the vehicle to automatically park, a mobile terminal converts the operating information with large data capacity input by the user in the mobile terminal into the parking control instruction with small data capacity, and only sends the parking control instruction to an automatic parking system controller for the vehicle to complete automatic parking.