The invention discloses a hot cutting machine for a plastic paper thin film. The hot cutting machine comprises a working platform and a support frame, wherein the support frame is arranged on one side of the working table, a conveying mechanism and a hot cutting die holder are respectively on the working table, the hot cutting die holder is located on one side of the conveying mechanism, a breaking blade is arranged on the hot cutting die holder, a driving cylinder is arranged on the support frame, a hot cutting die head is arranged on the driving cylinder, a cutting blade is arranged on the hot cutting die head, the cutting blade and the breaking blade are oppositely arranged, a heating device is arranged on the working table, a first heating pipe and a second heating pipe are respectively arranged on the heating device, the first heating pipe is connected with the hot cutting die head, and the second heating pipe is connected with the hot cutting die holder. The hot cutting machine disclosed by the invention has the advantages that the structure is simple, an automation operation is realized, the labor cost is saved, cutting is ordered, the cutting efficiency is high, the cutting effect is good, and the practicability is strong.