The charging instructions of the nano spray sterilization gun are as follows. The charging port is at the lower right of the handle. There is a square plastic button the size of a fingernail at the lower right of the handle. Unscrew the fixing screw with a screwdriver to open the buckle, and insert the original charging cable to charge. For three hours. Nano-spray disinfection gun has fine spray, long range, large disinfection area, good disinfection effect and high efficiency. The appearance is angular, steady and tough, which embodies the rigor and professionalism of medical products. The whole machine is small and exquisite and easy to carry.