The invention relates to a pig feed additive containing Chinese herbal medicines, and belongs to the field of feed additives. The feed additive is prepared from the following raw materials: a Chinese herbal medicine preparation, a Cacumen biotae extractive, Cacumen biotae, clostridium butyricum, bacillus subtilis, threonine zinc chelate, glycine copper chelate, fermented pomace, vital gluten and carriers such as wheat bran and medical stone. Through scientific proportioning and perfect preparation technology, the product is applied into pig daily ration, so that the growth performance in the young pig period can be improved, the pork quality of pigs in the growth and fattening period is improved, and the reproductive performance of sows can be further improved; and meanwhile, the application of partial antibiotics can be replaced, so that the culture benefit of pigs is improved, and the feed additive can be widely applied. The raw materials used in the product are green and safe raw materials, and the feed additive is a green feed additive.