The invention discloses a video processing system based on a cooperative grouping mechanism and belongs to the field of video wireless communication. The system disclosed by the invention comprises a camera node, an edge node and a server node, wherein a control module of the server node forms a cooperative group through a channel condition and computing ability information of the edge node received based on a relationship between an average video code rate and an object sensing precision by means of cooperative processing of the edge node and constructs a video block scheduling mechanism, so that the object sensing precision is effectively improved; and meanwhile, problems of a computing delay due to camera node processing, a transmission delay due to far end server processing, computing resource waste of residual edge nodes in a non-cooperative processing mechanism and sub task scheduling due to difference of transmission rates are solved.