Abstract: In recent years, growing graphene on insulating substrate surface has attracted much attention and new strategies are put forward, some of which tried on SiO₂/Si, sapphire, GaN, glass or other insulating substrates with good progress. Diamond, who has irreplaceable advantages as graphene substrate, is less used to grow graphene directly. In this paper, the research progress of graphene grown on diamond substrate is introduced and so is the application technology of the corresponding devices. The development of graphene preparation on diamond substrate is prospected.