In order to alleviate the rural water environment pollution problem, which restricts the rural ecological environment and hinders the sustainable development of agriculture, the rural sewage treatment system based on smart water services was proposed. The system is developed in B/S mode and adopts distributed component structure, which can be applied to a variety of hardware platforms and operating systems. Each application end obtains on-site data and operation and maintenance conditions through the data cloud platform to realize remote centralized management of sewage treatment stations. The results show that the sewage treatment system has a good removal effect on COD Cr, BOD 5, NH 3 - N, TN, TP, SS and other pollutants in sewage, and the removal rate is more than 80%.