▎ 摘　　要

NOVELTY - The structure has a vacuum container provided with a transmission unit and an X-ray emitting window. An emission unit is arranged with a cathode structure and a grid structure. A focusing structure is arranged with an anode structure that is arranged with an anode base. The grid structure is arranged with the cathode structure. The X-ray emitting window is arranged with the cathode structure. A cathode substrate is arranged with the cathode structure and a carbon nano tube that is arranged with a cathode substrate strip/graphene composite structure. USE - X-ray source based on carbon nano tube/graphene composite cathode structure. ADVANTAGE - The structure has better radiating effect, and increases carbon nano tube layer of adhesive force so as to increase emission property of X-ray source. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an X-ray source based on carbon nano tube/graphene composite cathode structure. '(Drawing includes non-English language text)'