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The research present state of orchard air-assisted spray technology at home and abroad was contrasted and analysed in this paper, and how to do research for Chinese orchard air-assisted spray in future was also pointed out.Combining with unique orchard planting patterns in China, to find differences of developing canopy in different growing stages with different structure, rules of droplet deposition and dispersion, influences of canopy structure on characteristic of air-assisted spray flow, and to match spray operating parameters with developing canopy.Though systematic improvement and optimization of air-assisted sprayer to achieve optimal droplet deposition coverage and increase pesticide effective utilization.