The invention discloses a method for separating ferro-silicon-aluminum products and vanadium-titanium-iron products from aluminum-vanadium-titanium-iron-silicon composite paragenetic minerals by adopting a gradient magnetic separation process. The method comprises the steps of: firstly, crushing the aluminum-vanadium-titanium-iron-silicon composite paragenetic minerals, and then performing a strong magnetic separation process on the crushed aluminum-vanadium-titanium-iron-silicon composite paragenetic minerals to obtain primary ferro-silicon-aluminum products and primary intermediate products; then performing sulfidizing treatment to separate sulphur deposits and secondary intermediate products from the primary intermediate products; and finally, performing weak magnetic separation process on the secondary intermediate products to obtain secondary ferro-silicon-aluminum products and vanadium-titanium-iron products. According to the invention, a plurality of subsidiary products are separated from raw ores in strong and weak magnetic separation manners, so that the manufacturing process is reduced, the production cost is saved, and the consumption of electric energy is reduced.