A communications device connection method, a terminal device, and a server system are provided. The method includes: acquiring an image identifier of a communications device, sending the image identifier to a server side, and receiving characteristic information of at least one dimension for a device type of the communications device; detecting connection information sent by at least one communications device, obtaining a device identifier of the at least one communications device, and obtaining to-be-matched characteristic information of at least one dimension for a type of the registered at least one communications device; comparing the characteristic information of the at least one dimension for the device type of the communications device with the to-be-matched characteristic information of the at least one dimension for the type of the registered at least one communications device; and binding to and establishing a communications connection to a selected target communications device.