NOVELTY - The method comprises dissolving tetrapropylammonium hydroxide and uranium hydroxide in deionized water, where a ratio of the tetrapropylammonium hydroxide and the uranium hydroxide is 2:1-4:1, dissolving aluminum sulfate in deionized water, adding orthosilicate to the dissolved solution, rapidly mixing the solution, where a mass ratio of aluminum sulfate and the orthosilicate is 1:30-1:100, mixing the tetrapropylammonium hydroxide and orthosilicate solutions according to a mass ratio of 1:3-1:5 for 4 hours at 5 degrees C, and dissolving hexadecane trimethyl ammonium bromide in deionized water.    USE - The method is useful for applying mesoporous silica hollow ball iron-based oxygen carrier in fuel gas chemical chain combustion technology, where the fuel gas is hydrogen, carbon monoxide, methane, ethane, ethylene, acetylene and propane (claimed).    ADVANTAGE - The method is capable of energy-efficiently and economically applying mesoporous silica hollow ball iron-based oxygen carrier in gas chemical chain combustion technology.    DETAILED DESCRIPTION - The method comprises dissolving tetrapropylammonium hydroxide and uranium hydroxide in deionized water, where a ratio of the tetrapropylammonium hydroxide and the uranium hydroxide is 2:1-4:1, dissolving aluminum sulfate in deionized water, adding orthosilicate to the dissolved solution, rapidly mixing the solution, where a mass ratio of aluminum sulfate and the orthosilicate is 1:30-1:100, mixing the tetrapropylammonium hydroxide and orthosilicate solutions according to a mass ratio of 1:3-1:5 for 4 hours at 5 degrees C, dissolving hexadecane trimethyl ammonium bromide in deionized water, adding the tetrapropylammonium hydroxide to the hexadecane trimethyl ammonium bromide solution according to a mass ratio of 1:0.8-1:1.3, mixing the solution for 6-10 hours at room temperature, transferring the solution into a stainless steel polytetrafluoroethylene reaction kettle, cooling the solution at 120-160 degrees C to obtain white solid, drying the white solid in a drying box for 12-36 hours at a temperature of 80-120 degrees C to obtain iron-based oxygen carrier, and applying the iron-based oxygen carrier to the gas chemical chain combustion.