The seat-type automatic elevator is easy to use and carry, is not restricted by the site environment, and can be stopped at any position during the ascent or descent process. The seat ergonomic design can save the energy of personnel, adjust the posture and free hands. It is used in the fields of wind power, industrial facilities, power facilities, bridge erection, mountain rescue, fire rescue and disaster rescue. It is not only a lift or power lifter, but also a portable winch or tractor.