Abstract: In order to solve the problems of low efficiency, difficulty in real-time monitoring and high equipment loss rate of traditional artificial reliance on mechanical equipment to irrigate farmland, Siemens S7-200 PLC and Kunlun Tongtai TPC7062K touch screen were used as the hardware core to design remote automatic irrigation configuration control system for farmland. On the basis of describing the overall structure of the system design, the design methods of login configuration, irrigation control configuration, irrigation water chart display configuration and other modules were introduced in detail, and the idea of PLC programming to realize remote automatic irrigation was analyzed.