The vacuum bag film suction bag is an assembly with exhaust function. Both sides are high-barrier vacuum bag films, which effectively prevent the gas that has been drawn into the suction bag from leaking into the perfusion system during the pumping process. A diversion net is used in the middle to facilitate gas conduction, which quickly exhausts the gas in the system to form a vacuum state. This product is suitable for vacuum infusion molding process. It can draw out the air evenly and quickly and prevent the loss of resin. It is especially recommended to be used in the blade production process.