▎ 摘　　要

NOVELTY - The method involves establishing a pressure sensitive structure-graphene mechanical model to determine relationship between pressure-sensitive structure and pressure sensitive area of a graphene composite structure. Light signal intensity and phase of an optical waveguide are changed. Real-time output spectrum is obtained. Wave trough drift amount is calculated. Real-time pressure is applied on a sensor to determine linear relationship between the pressure and the wave trough float amount of the output spectrum. Pressure sensitive structure-graphite alkene of a contact area is utilized to obtain pressure and pressure sensitive structure-graphene area contact. Output spectrum of an optical waveguide is changed to obtain the output spectrum of the optical waveguide to determine the effective refractive index. USE - Method for measuring pressure based on graphene sensor. ADVANTAGE - The method enables effectively detecting pressure with high precision and high sensitivity.