Catalyst comprising hollow metal nano particles supported on a carrier, comprising: the hollow metal nano particle comprises a hollow core portion, a shell portion including a first metal and a second metal, and an anionic surfactant inside the hollow core, wherein the hollow metal nano particles are supported on a carrier, and have an average particle diameter of 30 nm or less, the average particle diameter is a value obtained by measuring 200 or more hollow metal nano particles using a graphic software and measuring an average particle diameter through an obtained statistical distribution, the particle diameter of each of the hollow metal nano particles is within a range from 80% to 120% of the average particle diameter of the hollow metal nano particles, the hollow metal nano particles have a spherical shape, the first metal is platinum (Pt), the second metal is nickel (Ni), the hollow metal nano particles supported on a carrier are fabricated by a fabrication method including: forming a solution by adding a first metal salt, a second metal salt, and a surfactant to a solvent; dispersing a carrier by adding the carrier to the solution; and forming hollow metal nano particles supported on a carrier by adding a reducing agent to the solution, wherein the forming of the solution comprises forming a micelle by the surfactant, and surrounding the outside of the micelle by the first metal salt and the second metal salt, and the micelle region in the hollow metal nano particle is formed to be hollow, and the forming of the solution comprises further adding a stabilizer which includes one or two or more selected from the group consisting of disodium phosphate, dipotassium phosphate, disodium citrate, and trisodium citrate. the hollow metal nano particle comprises a hollow core portion, a shell portion including a first metal and a second metal, and an anionic surfactant inside the hollow core, wherein the hollow metal nano particles are supported on a carrier, and have an average particle diameter of 30 nm or less, the average particle diameter is a value obtained by measuring 200 or more hollow metal nano particles using a graphic software and measuring an average particle diameter through an obtained statistical distribution, the particle diameter of each of the hollow metal nano particles is within a range from 80% to 120% of the average particle diameter of the hollow metal nano particles, the hollow metal nano particles have a spherical shape, the first metal is platinum (Pt), the second metal is nickel (Ni), the hollow metal nano particles supported on a carrier are fabricated by a fabrication method including: forming a solution by adding a first metal salt, a second metal salt, and a surfactant to a solvent; dispersing a carrier by adding the carrier to the solution; and forming hollow metal nano particles supported on a carrier by adding a reducing agent to the solution, wherein the forming of the solution comprises forming a micelle by the surfactant, and surrounding the outside of the micelle by the first metal salt and the second metal salt, and the micelle region in the hollow metal nano particle is formed to be hollow, and the forming of the solution comprises further adding a stabilizer which includes one or two or more selected from the group consisting of disodium phosphate, dipotassium phosphate, disodium citrate, and trisodium citrate. <EOS>