The invention relates to the technology of monitoring of grid videos and in particular relates to a linked control system applied to multi-point monitoring of visual images. By virtue of the linked control system, the problems of lack of a reasonable network topology structure and lack of a unified and efficient transmission medium of an existing grid video monitoring system are solved. The linked control system applied to multi-point monitoring of visual images comprises N video acquisition layers, a schedule monitoring layer and a data transmission layer, wherein each video acquisition layer comprises a plurality of video cameras and a network video server; the schedule monitoring layer comprises a management server, a storage server, a disk array, an intelligent analysis server, a client terminal, a user control server, a digital matrix and a plurality of displays; the data transmission layer comprises N+3 enterprise service buses. The linked control system applied to multi-point monitoring of the visual images is suitable for grids.