At present,the extensive phenomenon of rural water use in China is relatively common,and the water-saving production and lifestyle have not been established.Strengthening the automation construction of water supply metering facilities for water intake units and their water supply objects and improving the automatic monitoring capacity of water sources are the main measures to solve resource water shortage and engineering water shortage,which is of great significance to deepen rural water conservation and loss reduction.This paper introduces the PID proportional,integral and differential control technology,uses the critical proportional method to debug and adjust the PID controller parameters on site,realizes the remote and accurate regulation of reservoir water supply in rural water supply projects,and improves the utilization rate of water resources.