Abstract: Importance of high-clearance sprayer in prevention of pest and grass during corn production period was expounded.Technical characteristics and application status of typical high-clearance sprayer products were introduced.Restriction factors of high-clearance sprayer development and promotion in domestic were analyzed.Development trend of high-clearance sprayer in domestic was discussed.It was pointed out that there were great advantages about domestic high-clearance sprayer in ground clearance，market flexibility and good market prospects.It could provide reference for development and application of domestic high-clearance sprayer.