The automatic L-type sealing, cutting and shrink packaging machine is a fully automatic and unmanned L-type sealing and cutting machine. It features automatic film feeding, punching, film sleeving, sealing and cutting. Only manual adjustment of the film guiding system and the feeding conveyor platform is required, and it is suitable for products of different widths and heights. This shrink packaging machine is applied to the shrink packaging of large quantities of products in industries such as food, software, medicine, beverages, tobacco, daily chemicals, automobiles, cables, cosmetics and electronics.