PROBLEM TO BE SOLVED: To provide a power sprayer which protects a drive device from a liquid without being affected by molding accuracy of a tank and a frame.SOLUTION: A power sprayer includes: a frame 10 having a box shape or a cylindrical shape a tank attached to an upper surface 13a of the frame 10 a drive device 30 stored in an internal space 10a of the frame 10 and a nozzle 40 which sprays a liquid supplied from the drive device 30. The drive device 30 includes: a pump which suctions the liquid in the tank and supplies the liquid to the nozzle 40 an electric motor which drives the pump and a battery which supplies electric power to the electric motor. An upper surface opening part 13c is formed on the upper surface 13a of the frame 10. Further, a cut-off wall 13d is formed at an outer periphery of the upper surface opening part 13c.
