Abstract: This paper introduces solar-powered water-saving irrigation device. It is indicated that we should regard study of water-saving irrigation. Abstract This paper introduces solar-powered water-saving irrigation device. It showed that the device was reliable and effective for a period lasting about half a year. Moreover, agricultural engineers acknowledged the device's value. The device also has now received two national patents. It can be used in water-saving irrigation for plant, and protect the virescence of the city.