Abstract: Micro-irrigation technology plays an important role in adjusting the industrial structure of agricultural facilities and providing controlled temperature, humidity, light and water resources for crop cultivation. Thus, in order to obtain maximum yield and economic benefits using the minimum irrigation water in facility cultivation,the composition of micro-irrigation technology, the design ideas of facility irrigation systems, the installation and construction of micro-irrigation technology equipment and application of the economy benefit of micro-irrigation technology in agriculture high efficiency protected cultivation were analysed, it would provide theoretical support for promoting the rational selection of micro-irrigation technology and guide the scientific application of crop micro-irrigation technology.