The individual partial structural functions of molten CuBr have been estimated from the anomalous X-ray scattering (AXS) measurements. This data processing includes the help of the reverse Monte Carlo (RMC) simulation technique. The cation-cation structure factor of a(CuCu)(Q) was found to be rather structureless and the closest Cu-Cu distance in molten CuBr was significantly smaller than that for Br-Br, indicating the like-ion penetration into the first unlike-ion coordination shell; similar to the molten CuCl case. It is then suggested that a disordered close packing of Br- ions where Cu+ ions meander so as to take strongly disordered distribution by penetrating through the tetrahedral holes.