Abstract: Objective in order to improve the quality of medical service, and build the hardware system of intelligent medical instrument with strong expansion ability, strong anti-interference ability and no need of wiring. Based on the wireless communication technology, AT89C52 is the core development design with wireless call, call information display and storage and other multi-functional intelligent health care system. Intelligent medical instrument host and extension are given in this paper basic flow chart of software design, hardware circuit design and the part of the software and hardware module in Lab6000 has carried on the debugging on the single chip microcomputer simulation experiment system, realized the function of the system requirements. The system has the advantages of simple circuit design, convenient operation and convenient networking, which can meet the technical requirements of the medical system