An engine inner wall ceramic processing method is provided. The method uses fullerene (C70) which is provided with high thermal stability and low geometrical symmetry and is easy to form diamond-likecarbon nuclear ceramic films, bases on corundum heterogeneous substrate of molecules of C70 on the metal inner wall of a vacuum sputtering load engine which is not polished and makes uses of radio frequency CVD equipment and gas source function of pretreatment process in the atmosphere of CH4 and CF4 with the environmental temperature of 300-500 DEG C to realize the generation of diamond-like carbon uniform nucleation. The method is helpful for improving the lubricity of the cylinder tube of the cylinder of the engine, catalyzing and atomizing the oil and gas in the cylinder and accelerating the oil and gas deflagration characteristics.