The present invention relates to a paste-powder binary bone cement used in arthroplasty or vertebroplasty, and, more particularly, to a paste-powder binary bone cement which can be directly used at a site to be treated without additionally waiting it to the site by dissolving predetermined chemically-unreactive powdered compositions in a liquid monomer to form paste having high viscosity and then mixing other powdered components with the paste in a minimum amount of air, and to an apparatus for injecting the same.
