The invention discloses a functional compound feed additive for alleviating vomitoxin poisoning of weaned piglets. The functional compound feed additive is prepared from the following components: 0.6 to 0.8 percent of arginine, 0.3 to 0.5 percent of glutamic acid, 0.2 to 0.5 percent of methionine, 2.0 to 3.0 percent of baicalin selenium, 0.6 to 1.5 percent of baicalin zinc, 0.5 to 1.0 percent of baicalin copper, 1.5 to 2.0 percent of baicalin, 0.6 to 1.3 percent of grape seed proanthocyanidin, 1.2 to 1.6 percent of globe artichoke extract, 0.4 to 1.0 percent of vitamin A, 0.6 to 1.0 percent of vitamin C, 1.7 to 3.0 percent of vitamin E, 2.8 to 4.0 percent of zymosan, 4.5 to 5.0 percent of astragalus polysaccharide, 2.5 to 3.3 percent of echinacea polysaccharide, 0.2 to 0.5 percent of lactobacillus, 2.7 to 4.0 percent of bacillus subtilis, 0.2 to 0.5 percent of enterococcus faecium, and 65.5 to 76 percent of zeolite powder. The functional compound feed additive has relatively good alleviation effects for oxidization injury of weaned piglet intestinal tracts, reduction of immunity, intestinal flora disturbance and growth suppression.