This production line realizes continuous production of PC/PE/PP hollow grid plate, which is applicable to construction decoration, advertisement collocation and noise insulation of highway as well as packaging. PE/PP/PC hollow grid plate is an ideal substitute of paper box in making packaging box. It is characterized by light weight, high intensity, dampproof, water moof and anticorrosion. The width of the pruduct is 1220-2100mm and the thickness is 2mm-12mm.