The invention discloses a full-automatic rolling composite molding machine for plastic sheet double-sided composite materials, and the machine includes a discharge port connected to an extruder, a compound molding unit, a cooling unit, a cutting unit, a belt traction unit and a numerical control punching unit, the discharging port is arranged above the composite molding unit, the cooling unit, thecutting unit, the belt traction unit and the numerical control punching unit are arranged at the rear of the composite molding unit in sequence, the composite molding unit cutting unit is composed ofa pair of mold rollers, a pair of primary cooling rollers and unwinding devices, the pair of mold rollers are left and right aligned, the discharge port is arranged above the pair of mold rollers, each forming roller of the pair of mold rollers is correspondingly provided with a set of unwinding device, the unwinding device releases the coil to the forming roller, and a free falling space for products is reserved between the belt traction unit and the numerical control punching unit.