Medical infusion bag tubular film extrusion line is composed by extruding main machine, cooling and traction system, controlling electric cabinet and mould system etc.. It can continuously produce smooth and striped bag and film for Blood Transfusion Bag, Infusion Bag, Drainage Bag, Douche Bag and Bag Transfusion System etc.. The film extruded or blew by the machine is glabrous, transparent, evenly plasticized and clean. The whole machine is high level of automation, easy for operating and use little space. It is suitable for food packing, medical packing, drinking packing industries and so on. It is a kind of economical and practical extruding and blowing equipment for PVC soft bag manufacture.