The utility model discloses a vacuum-pump exhaust-port pressure and noise reduction box. The vacuum-pump exhaust-port pressure and noise reduction box comprises a triangular support and a static pressure box, wherein the triangular support is fixedly connected to a wall, the static pressure box is arranged on the triangular support, the bottom of the static pressure box is communicated with an exhaust pipe of a vacuum pump, an air outlet is arranged on one side, far away from the wall, of the static pressure box, and a flow deflector is arranged at the air outlet. The vacuum-pump exhaust-port pressure and noise reduction box can insulate direct contact between the exhaust pipe of the vacuum pump and the outside world; by means of the box-type static pressure box, wind is exhausted after the wind speed is reduced to a certain range, and therefore high-speed wind currents and air are prevented from making direct contact to produce noise. The vacuum-pump exhaust-port pressure and noise reduction box plays a role in reducing pressure and noise. After the vacuum-pump exhaust-port pressure and noise reduction box is adopted, the speed of the wind currents exhausted to the environment is reduced obviously, and the vacuum-pump exhaust-port pressure and noise reduction box meets the requirement for the wind conveying wind speed standard of a laboratory, and is low manufacturing cost, good in occupational health and environment friendliness effect and very suitable for noise elimination of an exhaust port of the vacuum pump of a tobacco factory.