The invention discloses a pesticide applying device based on an unmanned aerial vehicle. The pesticide applying device comprises a driving trolley, a pesticide tank, a stirring device, the unmanned aerial vehicle, a parking platform, a power source device, a water pump device and a storage device. The driving trolley is used for driving the ground device to run; the stirring device comprises a motor, a connecting shaft sleeve, a stirring rod and an impeller and is used for fully mixing liquid medicine; the unmanned aerial vehicle is a mooring multi-rotor unmanned aerial vehicle which comprises an unmanned aerial vehicle body, a water conveying pipe and a spray head, and spraying of pesticide liquid is achieved. The power supply device comprises a battery and an adapter box and is used for transmitting power to each device; the water pump device is fixed to the outlet end of the pesticide tank and used for pumping pesticide in the pesticide tank into the unmanned aerial vehicle pesticide spraying device; the storage device comprises a cable storage part and a water pipe storage part. The pesticide spraying trolley is simple in structure, a heavy pesticide tank and a power supply on a traditional agricultural unmanned aerial vehicle are arranged on the trolley, the cruising ability is improved, meanwhile, compared with a common pesticide spraying trolley, the pesticide spraying trolley is more flexible, and cost is reduced.

本发明公开一种基于无人机的施药装置，包括驱动小车、药水箱、搅拌装置、无人机、停机台、电源装置、水泵装置和收纳装置；所述驱动小车用于驱动地面装置的行驶；所述搅拌装置包括电机、连接轴套、搅拌杆和叶轮，用于使药水充分混合；所述无人机采用系留多旋翼无人机包括无人机身、输水管和喷头，实现药水的喷洒；所述电源装置包括电池和适配箱，用于向各装置输送电力；所述水泵装置固定在药水箱的出口端，用于将所述药水箱内的药水泵入无人机喷药装置；所述收纳装置包括线缆收纳和水管收纳。本发明结构简单，把传统农业无人机上较重的药水箱和电源布置在小车上，续航能力提升，同时比普通施药车更灵巧，降低了成本。