The connection between the grating and the metal substrate in the fiber grating pressure sensor is mainly divided into the adhesive process and the metallized packaging process. The creep of the sensor will be caused by different processes. It will also directly affect the measurement accuracy of the sensor. Experiments of the self designed cantilever beam fiber Bragg grating pressure sensor are performed, and the experimental results show that the linear fitting of the pressure and wavelength of the fiber Bragg grating pressure sensor made by the metallized packaging technology and the 353ND glue packaging process are both higher than 0.998. The fiber Bragg grating pressure sensor with 353ND glue and steel metal substrate is within the 0~6 MPa pressure range. The maximum wavelength shift caused by the bending of the cantilever beam in 5 min is 8 pm. The research also shows that the sensitivity of the same structure metallized fiber Bragg grating pressure sensor is 3.4 times than that of the bare fiber grating sensor with 353ND glue.