The invention provides a three-column fuel supply structure for a hypersonic aircraft scramjet. The three column structures of the three-column fuel supply structure are arranged on a base in a straight line, and the distance between the adjacent two column structures is 5 mm; a porous shell is made of porous medium materials sintered by metal particles, and is wrapped on the top of a hollow support rod and sintered into a columnar structure; and fuels are distributed to the three column structures and enter a cavity of the porous shell through an injection port at the bottom of the hollow support rod. The three-column fuel supply structure for the hypersonic aircraft scramjet solves the problem that an existing fuel supply structure in the hypersonic aircraft scramjet cannot work for a long time, the hollow columnar structure made of the porous materials sintered by the three metal particles is adopted to simultaneously inject the fuels, the full-coverage sweating and cooling are carried out by utilizing the fuels while supplying the fuels, and meanwhile, the relationship between cooling requirements and flow distribution is balanced by utilizing the design of the three-column structure.