▎ 摘　　要

NOVELTY - Preparation of nanohydroxyapatite/graphene-based composite material comprises adding graphene oxide powder to calcium salt, and stirring in water bath at 30-50 degrees C; adjusting pH using ammonia solution to 9.5-10.5, dripping phosphate solution, and reacting at 30-50 degrees C; stirring for 16-24 hours at 35-40 degrees C, and aging at room temperature for 12-24 hours; and standing, repeatedly washing with deionized water until neutral, filtering, and freeze-drying. USE - Method for preparing nanohydroxyapatite/graphene-based composite material (claimed) used for bone tissue repair and dental restoration. ADVANTAGE - The method is simple and controllable with low cost, short processing period and low energy consumption. The material has good biocompatibility and oxidization.