This paper introduces the preparation of graphene material, the performance of graphene pressure sensor and its application prospect in wearable electronic devices. Firstly, the preparation method of graphene material is summarized, and the advantages of graphene pressure sensor in mechanical, conductive property and display are expounded. Then, the strategies of adding graphene, graphene derivatives or graphene composites to the structure of the pressure sensor to improve the performance of the sensor are investigated. Finally, it introduces the application of graphene pressure sensor in wearable electronic devices, including human behavior and health detection, human-computer interface, electronic skin and wearable display, excellent performance and prospect.