The invention provides a motorplane capable of realizing permanent circumaviation. The motorplane realizes perpetual motion operation by adopting the incremental force perpetual motion power principle, namely mutual power supply step by step and cyclic energy complement for perpetual motion. The motorplane dispenses with external connection of electric energy, realizes zero emission, can generate permanent mechanical energy and electric power by self, never has power failure and is the most perfect. Meanwhile, the plane can deliver vast electric power to other household appliances. The plane comprises an incremental force perpetual motion cabin, an incremental force perpetual motion power system, a deceleration control power machine, an engine, a generator, super-capacity storage batteries and a fan, wherein the incremental force perpetual motion cabin comprises a perpetual motion power device inner sleeve, a perpetual motion engine body shell front plate, flange plates, a perpetual motion engine body shell rear cover, an incremental force perpetual motion connecting shaft rod, high temperature resistant axial rare-earth strong magnets, step-by-step magnetic heading power and a plurality of multi-step power source device plates, radial high-frequency permanent magnets, air exchange ventilation hoods, whole engine base fixing supports and the like. The plane has inexhaustible new energy.