A polyurethane foam die comprises an upper die table, a punch, an exhaust slot, a guide rod, a guide hole, a lower die table, a female die, a movable block of a hydraulic press, threaded holes, connecting pieces, bolts and a hydraulic press, wherein the punch is arranged in the upper die table, and the upper die table is provided with four threaded holes, and the upper die table is installed on the movable block of the hydraulic press through the threaded holes and bolts. The hydraulic press is fixed on the top plate of the manufacturing equipment; Two guide rods are arranged below the upper die table; One end of each guide rod is placed in a guide hole formed on the lower die table; The female die directly below the male die is installed in the lower die table; After the upper die table and the lower die table are closed, a gap is formed between the male die and the female die as a cavity.

As a further scheme of the utility model, the upper die table is made of cast iron, the punch is made of resin material, the upper die table is in interference fit with the punch, the punch is attached to the upper die table, and the joint of the upper die table and the punch is communicated with the exhaust groove.