Embodiments of the present disclosure provide a service processing method, apparatus, and system. The method may include: receiving, by a processing server, biological feature information of a user and service settlement information generated according to a service behavior of the user that are sent by a service device. The processing server searches for account information bounded with the biological feature information; performs payment processing on the account information according to the service settlement information, to obtain a processing result; and sends the processing result to the service device and a terminal.