Abstract: This paper through the airassist anti drift，boom position adjusting，hydraulic driving，fluid flowing，spraying identification technologies integrating，designed the 3WQX1300 type suspended airassited boom sprayer that had the good antidrift performance and the independent hydraulic driving system according to our country planting model.The sprayer can save pesticides and overcome the shortcoming of the old sprayers.It met requirements of pest control.The machine demands on low spraying environment conditions.So it will effectively solve the bottleneck of popularization and application low quantity spray technology.