The utility model discloses a calibration arrangement for infrasonic sensor and corresponding, this sensor include two cavitys, and a cavity seals the steady wind pressure who keeps in a period with atmosphere intercommunication, another cavity relatively, and the junction of two cavitys is equipped with metallic film, and this metallic film is the moving plate of electric capacity transducer, and the atmospheric pressure difference of two cavitys causes metallic film to warp, arouses capacitance variation output voltage. The utility model has the advantages that infrasonic sensor's sensitivity has improved, the low -frequency response can be opened up widely by 3000 seconds.