The invention relates to a high-speed evaporation and circulation steam engine for directly spraying liquid onto a hot wall. The steam engine mainly comprises a heat source, a rectangular hot wall, a transverse guide spacer, a rectangular evaporator cover, a spray nozzle, a steam turbine, a condensing radiator, a water pump, a tubular hot wall, a spiral guide spacer, a central heat pipe, a tubular evaporator cover, a piston-type sliding air valve steam engine, a planar hot wall, an evaporator cover, a piston-type air valve-free steam engine, an enclosing shell, a porous transverse spacer, a taper pipe hot wall, a Mu Dark rotary steam engine, a sealing steel shell, a straight round tube hot wall, a petal-shaped test tube hot wall, a tubular evaporator cover, a turbine steam engine and the like. The steam engine has the advantages of high heat efficiency, energy conservation, small size, small vibration, low noise, simple structure, mature technology and the like, and can be widely applied to automobiles, planes, ships, power generation, industrial and agricultural power and the like.