Abstract: Lily is suitable for living in loose and fertile soil with good drainage, Lanzhou is located on the Yellow River, rich in water resources, and belongs to the arid climate. The geographical conditions, climate conditions and soil and water conditions are very suitable for lily growth. The lily planted is thick and good quality, so lily has become a specialty of Lanzhou. Based on the application of micro spray water supplement irrigation technology in Lanzhou lily planting, this paper discusses the micro spray water supplement irrigation technology and its application advantages in agricultural planting, aiming to provide some reference for the application and promotion of micro spray water supplement irrigation technology.