The laser rust remover can solve the problem of rail rust removal. The principle of laser rust removal is to use high-frequency and high-energy laser pulses to irradiate the surface of the workpiece. The coating layer can instantly absorb the focused laser energy to make the surface oily, rusty or The coating evaporates or peels off instantaneously, which can effectively remove surface attachments or surface coatings at high speed. The laser pulse with a short action time will not damage the metal substrate under appropriate parameters.