A sensing system based on a combination of fiber Bragg grating (FBG) pressur e sensor and interferometric wavelength demodulation based on phase generated carrier (PGC) is proposed to ac hieve the detection of pulse information in this paper.A highly sensitive point-contact type FBG dynamic pres sure sensor is designed,and the sensitivity and frequency range of the sensor are analyzed by using the finite element meth od.The low frequency characteristic of the interferometric wavelength demod ulation algorithm based on PGC is optimized,and a high resolution wavelength demodulation is realized as low as 0.2Hz.The frequency response characteristics of the sensor are studied experimentally,and pulse si gnal samples are collected.Test results show that the sensor has a flat response of 750pm/N below 600Hz with a resolution better than 1.4×10－6N·H₂12,which enable a high fidelity red uction of pulse information.