The invention discloses a plastic film cutting machine, which comprises a cutting table used for placing a plastic film, an electric heating bar which is placed on the cutting table and a heat transfer piece which is connected to the bottom end of the electric heating bar. The invention provides a cutting machine suitable for the plastic film; the plastic film is cut by adopting a hot scalding mode; the film cannot be torn by the cutting pressure; and the efficiency is high and the quality is good.