Embodiments of the invention disclose a service communication method, a service terminal, a service server and a system. The service communication method comprises the following steps that the service terminal acquires an object user identification in service information; the service terminal acquires a user communication identification which is registered to the service server by an object user in advance according to the object user identification; the service terminal uses the acquired user communication identification to establish service communication with the object user. By using the method, the terminal, the server and the system of the invention, a risk that communication information of the object user is leaked during a service execution process can be effectively reduced.