The invention relates to the filed of mineral processing, in particular to a utilization method of sulfur-containing magnetite which comprises the following steps: (1) carrying out magnetic separation on the sulfur-containing magnetite to obtain magnetic rough concentration, floating magnetic tailing to obtain sulphur-iron concentrate; (2) proportioning the magnetic rough concentration and the sulphur-iron concentrate, wherein the sulphur grade of mixed ore sample after proportion is not less than 35%; (3) carrying out oxidizing roast on the mixed ore sample to obtain oxidizing roasting slag and flue gas sulfur dioxide, and preparing the flue gas sulfur dioxide into sulphuric acid; and (4) leaching the oxidizing roasting slag by hot sulfuric acid solution to remove harmful elements such as copper, zinc and the like to obtain iron concentrate. Compared with the prior art, the invention is reasonable in economy and feasible in technology, solves the problem of difficult utilization of the sulfur-containing magnetite, can generate good economical benefit and has high promotional value.