Abstract:According to the requirement of launch control system of missile and combined with the feature of embedding system ,An embedding Land-air missile launch control system based on C8051F MCU(Microcontroller Unit)is proposed. The construction and function of such system as well as the design of the some essential technology(generating follow up signal safely, testing the phase sequence of three-phase power and communication between MCU)and software are studied. Through debugging system and application in reality, the system is of strong extendibility, simple operator. Finally, the system meets the demands.