▎ 摘　　要

NOVELTY - Directly preparing graphene on insulating substrate comprises (i) providing an insulating substrate, (ii) forming germanium layer and grapheme layer on the upper surface of the insulating substrate from bottom to top, and (iii) removing germanium layer by oxidation volatilization treatment and forming graphene layer on the insulating substrate. USE - The method is useful for directly preparing graphene on insulating substrate. DESCRIPTION OF DRAWING(S) - The drawing shows flow diagram of the directly preparation of graphene on insulating substrate (Drawing includes non-English language text).