▎ 摘　　要

NOVELTY - The method involves utilizing a white light interference and horizontal grating to determine a wavefront position of white light interference on a surface of an observed graphene strip and a horizontal grating substrate. The graphene strips and the surface of the horizontal grating substrate are observed with a white light interferometer. The series of graphene strips are set with different angles. The intersection of the graphene optical path difference curve and the abscissa axis are determined. The graphene strips are transferred to a glass plate to manufacture a graphene superconducting test element according to the angle of the vacuum channel. The test element is placed into the test device. The superconducting test is realized under the conditions of normal temperature, normal pressure and moderate humidity. USE - Method for testing white light interference of a graphene superconducting vacuum channel used in power transmission, magnetic suspension technology, nuclear magnetic resonance, quantum computer and national defense. ADVANTAGE - The method enables realizing the superconducting test under normal temperature, normal pressure and medium humidity condition. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene superconducting vacuum channel. (Drawing includes non-English language text).