The invention relates to a graphite contact-holding electrode used for a hollow negative electrode, and belongs to an aerospace electric propulsion technology and the vacuum electronic field. The graphite contact-holding electrode mainly comprises a contact-holding electrode barrel, a thermal screen jacket, a molybdenum-rhenium foil, a thermal screen supporting part, an air exhausting cushion, an insulating ceramic part and a fastening assembly, wherein the graphite contact-holding electrode is prepared from a high-density graphite material, so that the sputtering etching resistance of the graphite contact-holding electrode is improved, the service life of the hollow negative electrode is prolonged, and the reliability of the hollow negative electrode is improved; residual gas in the graphite contact-holding electrode can be exhausted through the air exhausting cushion, so that a partial discharge phenomenon in a vacuum environment is avoided; and by virtue of a convex structure manufactured on the thermal screen jacket, a contact area between the thermal screen jacket and the molybdenum-rhenium foil can be reduced, thereby reducing the thermal loss of the contact-holding electrode and improving the effective thermal efficiency of the contact-holding electrode.