A pesticide sprayer is an agricultural device used for evenly applying pesticides. It creates pressure through a manual or electric pump, atomizing the pesticide liquid into fine droplets via a nozzle to cover the crop surface. The sprayer is equipped with adjustable nozzles to control the spray pattern and coverage area, euring efficient and environmentally friendly application. Common types include backpack, tractor-mounted, and drone spraye. This device significantly enhances fieldwork efficiency, reduces manual labor, improves crop yield and pest control effectiveness, and decreases pesticide usage and environmental pollution.