A graphite block embedded for a large-scale blast furnace cooling wall comprises a graphite block body and a fixture block arranged at one end of the graphite block body, wherein the fixture block has isosceles trapezoid shaped longitudinal section and rectangular longitudinal section. When the graphite block provided by the utility model is used, the fixture block arranged at one end of the graphite block body is embedded in a dovetail groove of a copper cooling wall, thereby improving the cooling intensity of the cooling wall; high-grade graphite blocks with higher heat conductivity and better alkali resistance and residue resistance are taken as bricks to be embedded; and refractory bricks with good heat shock performance and heat conductibility, strong alkali and erosion resistance and higher intensity under ordinary temperature and high temperature are piled up in the cooling wall.