Abstract: Water and fertilizer integration is a modern agricultural technology to realize green, accurate and intensive agriculture. It can save water and fertilizer, save time and labor, increase production and efficiency, improve quality, reduce crop diseases and pests,control temperature and humidity, greatly improve the utilization rate of water and fertilizer resources and solve the problem of agricultural water shortage. In recent years, Shanxi Province has vigorously promoted water-saving agriculture and accelerated the demonstration and popularization of water fertilizer integrated and efficiency increasing irrigation technology.