The present invention relates to a feed additive for lowering cholesterols. The feed additive is characterized in that the selenium content is 20.4 mg/kg. The feed additive is composed of the following materials: selenium-enriched herba gynostemmatis pentaphylli powder, selenium-enriched folium ginkgo powder, selenium-enriched cardamine hirsuta, selenium-enriched radix astragali, selenium-enriched tea leaf powder, selenium-enriched pine needle powder, selenium-enriched magnolia officinalis leaves, selenium-enriched malt powder, persimmon leaf powder, distiller's yeast, dried tangerine peels, mirabilite, lobed kudzuvine leaf powder, edible salt, copper sulfate, ferrous sulfate and zinc sulfate. The feed additive improves the feed conversion rate and utilization rate, the weight gains of raw pigs are significantly, and the feed additive is also very obvious in lowering lipids and cholesterols, and supplementing selenium.