Base on the current situation of the development of wireless medical, according to the multi-frequency and broadband MIMO road medical special wireless network system (WIDS) safe use problem, the WIDS themselves security, stability and continuity of network transmission, wireless network impact on human health and the medical equipment is discussed and studied. Based on the research of the system architecture and the actual test results, the corresponding conclusion is drawn, and it has the reference value to the construction and development of medical wireless networks.