Abstract: This paper proposes an intelligent water-saving irrigation control system based on Lora wireless communication. For large area without covering a vast area irrigation, this system adopts the low power radio control technology can effectively reduce the energy consumption of the irrigation system, wireless spread spectrum technology based on LoRa can reduce the mutual interference between the spectrum and improve the accuracy of information transmission. The system uses the penmen equation for prediction of water amount in the area of irrigation and sending instruction to PC, wireless station control electromagnetic valve to open or stop after PC receives the irrigation instruction to it, thus complete the adaptive intelligent control.