The invention discloses a multifunctional feed additive. The multifunctional feed additive contains 13 parts of copper sulfate, 20 parts of ferrous sulfate, 15 parts of manganese sulfate, 10 parts of magnesium sulfate, 5 parts of sodium selenite, 7 parts of cobalt chloride, 12 parts of boric acid, 13 parts of lysine, 8 parts of methionine, 22 parts of oxytetracycline, 11 parts of choline chloride, 6 parts of wheat middling, 18 parts of folic acid and 11 parts of glossy privet fruit. The multifunctional feed additive provides abundant nutrient substances, is beneficial to absorption by poultry by being added to feeds and has the effect of improving the absorptivity and palatability of the feeds.