Abstract: Aiming at short of the higher automatic sprinkler irrigation for scattered plot and water source，it is necessary to develop one intelligent control system based on mini pivot.Its key technical problem is research and development of control system，including synchronization system for positive and negative，synchronous control system，safety protection devices，intelligent control system，variable rainfall control system and remote control system，etc.The intelligent control system，variable rainfall control system and remote control system for variable precipitation are critical systems.The successful research and development of this system could effectively enhance automation level of our country′s irrigation.