In order to solve the complex problem of finely sensing the static pressure distribution and dynamic pressure changes on the wall during high?speed flight of aircraft, a capacitive flexible pressure sensor based on PDMS dielectric material was developed by finely matching the material concentration of PDMS?CNTs and bonding the electrode layer and dielectric layer of the sensor. The difficulty of interface friction and energy loss mismatch between electrode layer and dielectric layer was overcome. The static pressure distribution and dynamic pressure change of the sensor were verified by static/dynamic performance verification experiments. The results show that the developed sensor can detect the static pressure of 0.1 ~ 104.9 kPa, can realize the dynamic pressure detection under the vibration frequency of 10 ~ 2 000 Hz, and has good static/dynamic pressure sensing ability. The flexible pressure sensor can be applied to the complex curved structure of aircraft, and has a good application prospect in optimizing the aerodynamic shape of aircraft.