The utility model provides an evacuation buffering device. The evacuation buffering device comprises a buffering air bag, wherein a protective cover is arranged outside the buffering air bag, the opening of the buffering air bag is connected with an air inlet pipe in a sealing manner, and a U-shaped pressure gage and an air discharging valve are arranged on the air inlet pipe. The evacuation buffering device provided by the utility model has the benefits that the evacuation buffering device can be applied to occasions having high requirements for the environment; the evacuation buffering device is simple in structure, is simple and convenient to operate, is low in cost, and is easy to apply and popularize; the problem of recycling gases can be effectively solved.