The utility model relates to a quantitative positioning pressurizing bag which comprises a cloth bag, an air sac and a venting meter. The utility model is characterized in that a buckle and a zipper are arranged on the cloth bag, and the air sac is arranged inside the cloth bag; an interface and a valve are arranged on the air sac; the other end of the air sac is connected with the venting meter; the venting meter comprises a joint, a pressure gauge and an inflating balloon. The utility model has the advantages of simple operation, adjustable pressure and hemostasis convenience. The utility model can be widely used for clinical practice.