A method for manufacturing a liquid jetting apparatus, which is provided with: a flow passage formation member including a pressure chamber, and a piezoelectric actuator having a vibration film provided on the flow passage formation member, a piezoelectric film arranged on the vibration film to correspond to the pressure chamber, first and second electrodes arranged on different surfaces of the piezoelectric film, a first protective film covering the piezoelectric film, a wire connected to the second electrode, and a second protective film covering the wire, includes: forming a first protective film on the vibration film to cover the piezoelectric film and the second electrode; forming the wire and the second protective film to cover the wire with the first protective film covering the piezoelectric film and the second electrode; and removing a part, of the first protective film, that overlaps with the second electrode, after forming the second protective film.