Safety control method, device and system

The invention discloses a safety control method, device and system and belongs to the technical field of Internet security. The safety control method comprises the steps that 1, an opposite terminal device receives a control command request; 2, the opposite terminal device conducts white list check on a control command in the control command request; 3, the opposite terminal device verifies an executive program corresponding to the control command; 4, the opposite terminal device executes the executive program corresponding to the control command and returns an execution result to a host on the corresponding side. Compared with the prior art, the safety control method has the advantages that the host on the corresponding side is prevented from damaging the system of the opposite terminal device; the authority of the host on the corresponding side is limited; it is guaranteed that an executable file is not tampered; and safe remote control over an imported front-end processor by an extranet host and safe remote control over an imported server by an intranet host can be achieved.