The invention relates to a Chinese medicinal herbal compound feed additive for treating stunting pigs effectively, which is prepared from the following raw materials in part by weight: 10 to 15 parts of rhubarb, 10 to 15 parts of liquoric root, 10 to 15 parts of swordlike atractylodes rhizome, 0.5 to 0.8 part of cobalt chloride, 0.5 to 0.8 part of zinc sulfate, 0.03 to 0.05 part of sodium selenite, 1 to 2 parts of copper sulfate, 1 to 2 parts of magnesium sulfate, 1 to 2 parts of potassium iodide, 3 to 4 parts of ferrous sulfate, 1 to 2 parts of multivitamin, 0.5 to 1 part of lysine and 0.5 to 1 part of table salt. The compound feed additive can regulate the gastrointestinal digestive absorption function, improve the survival rate of piglets, accelerate growth speed, shorten the slaughter rate of live pigs and prevent the residues of antibiotic medicaments effectively.