The invention relates to a whole carbon valve with high temperature and corrosion resistance, comprising a valve stem, a valve core, a sealing ring, a sealing press piece and a valve base, which is characterized in that the valve stem and the valve core are made from composite material of carbon and carbon; the valve base is made from graphite. Specific gravity of the graphite is 1.72 to 2.00g/cm<3>, and the largest grain is smaller than 0.2mm. The invention also relates to a making method for the composite material of carbon and carbon used in the valve stem and the valve core and the graphite used in the valve base. The whole carbon valve has the advantages of high temperature and corrosion resistance.