Communication method, communication device, server and communication system

The invention provides a communication method, a communication device, a server and a communication system. The communication method comprises the steps that when a first terminal is called, a first system receives information sent by the server through a network, and sends the information to a second system; the second system decides to receive the call or not according to the information. According to the technical scheme, the phenomenon that calls making by strangers at random can be avoided, communication between terminals is prevented from being recorded, and safety of communication is improved.