The invention relates to the technical field of recycling of tailing resources, and particularly discloses a method for comprehensively recycling ferroniobium from rare-earth tailings containing ferroniobium rutile. According to the method, the rare-earth tailings with the ferroniobium rutile being as mainly-containing niobium minerals is subjected to clean and economical grading-gravity separating to obtain ferroniobium mixed rough concentrate in advance; the low-magnetism hematite and part of limonite are converted into strong-magnetism magnetite by adopting a reduction roasting method; theroasted product is subjected to ball milling and fine grinding, so that the niobium minerals and iron minerals are further minerally liberated, and favorable conditions are created for weak magnetic separation and shaking table separation of the iron minerals and the niobium minerals. Firstly, partial gangue is removed in advance through gravity separation, so that the feeding grade of the metallurgy is improved, and the feeding amount of the reduction roasting is reduced; in addition, deep reduction does not need to be carried out under the high-temperature condition with a cosolvent added, so that the method has the advantages of being simple and short in flow, easy in implementation and operation, environment-friendly, economical, high in niobium concentrate grade and recycling rate andthe like, and the comprehensive recycling of ferroniobium resources is realized.