The invention provides a snow melting carpet. A plurality of elastic bulges are arranged on the upper surface of the snow melting carpet, a plurality of adsorption devices are arranged on the lower surface of the snow melting carpet, and a plurality of self-pressure power generation and heating devices are arranged between interlayers of the upper surface and the lower surface of the snow melting carpet; each self-pressure power generation and heating device consists of an upper part heating unit and a lower part power generation unit. The rotating shaft is moved downward through pressing of external load, a second power generation body is rotated through a matched rectangular opening, and a first piezoelectric plate and a second piezoelectric plate are contacted to cause deformation and generate power; a metal frame can generate power through cutting magnetic induction lines during the rotating of the second power generation body; a circular piezoelectric plate is moved downward through a transmission shaft to generate deformation and conduct power generation; while the second power generation body rotates, a volute spiral spring is tightened, and when the external load disappears, the second power generation body rotate oppositely for power generation; and the power generation quantity is greatly increased through quadruple power generation.