The invention discloses a milk-replacer complete feed for lambs, which is applicable to lambs which are not provided with enough goat milk in seven days after being born (colostrums in three days and ordinary milk in four days). The complete feed comprises the following components: puffed corn, puffed full-fat soybean, puffed millet, fermented bean pulp, whey powder, milk powder, microcologics, premixed feed additive, glucose, lysine, methionine, salt, calcium hydrophosphate, vegetable oil and lime powder. The complete feed can maintain the life of a lamb without enough goat milk supply and also can promote the fast development of the paunch of the lamp to improve the intestinal digestion function of the lamp, thereby laying a foundation for fast growth of the lamb in the later stage. Lamps fed with the complete feed can grow faster than lamps fed in a normal way.