C4ISR demonstrates its powerful function in modern information warfare, and how to access the information, in particular, is the key to the technology. To meet the needs of video surveillance systems of C4ISR, this paper designs a video reconnaissance system of C4ISR based on wireless multimedia sensor network, taking advantage of WMSN's (wireless multimedia sensor networks) self-organization and strong character. This work designs its network architecture, gives the design methods of the node and the sink node, and also provides the realization of communication protocols.