The invention discloses a double-liner concurrent vacuum plastic uptake molding machine. The machine includes a first feeding, aligning and preheating integrated device, a second feeding, aligning andpreheating integrated device, a first main heating device, a second main heating device, a first molding machine body, a second molding machine body, a discharging device, a bead cutter, a first punch press and a second punch press which are arranged in sequence, wherein the first punch press and the second punch press are arranged side by side; conveying chains are sequentially arranged in the first feeding, aligning and preheating integrated device, the second feeding, aligning and preheating integrated device, the first main heating device, the second main heating device, the first moldingmachine body, the second molding machine body and the discharging device; the discharging device is used for grasping products molded by the first molding machine body and/or the second molding machine body to the bead cutter, grasping products on the bead cutter to the first punch press and/or the second punch press and grasping products passing by the first punch press and/or the second punch press. The double-liner concurrent vacuum plastic uptake molding machine can achieve simultaneous processing of two kinds of products with different processing parameters on the same production line.