Remote control method, remote control device, terminal and remote control system

The invention brings forward a remote control method, a remote control device, a terminal and a remote control system. The remote control method comprises the steps: when a master control terminal remotely controls a terminal to be controlled, collecting first biological identification information of a user of the master control terminal; and sending the first biological identification information to the terminal to be controlled so that the terminal to be controlled determines, according to the first biological identification information, whether the master control terminal stops controlling the terminal to be controlled remotely. According to the technical scheme, the safety and privacy of the terminal to be controlled staying in a remote control process can be effectively improved, and then the user experience is improved.