The invention relates to the field of livestock breeding technology, which specifically relates to a forage for sow during lactation period, and the forage is prepared by the following raw materials by weight: 70-80 parts of corn, 20-25 parts of bean cakes, 20-25 parts of millet bran, 15-18 parts of wheat bran, 12-15 parts of pea residues, 10-12 parts of dried white radish, 5-8 parts of black sesame, 3-4 parts of pig heat powder, 6-8 parts of vegetable sponge of luffa, 4-5 parts of fish meals, 2-3 parts of stone flour, 1-2 parts of shell powder, 5-6 parts of laver powder, 8-10 parts of purslane, 1-2 parts of radix Rhapontici, 2-3 parts of cape jasmine, 1-2 parts of pitch, 1-2 parts of Akebia stems, a proper amount of salts and 4-5 parts of feeding promoting agents. The prepared sow forage has balanced and comprehensive nutrition, and can satisfy each nutrition demand of postpartum sow, radix Rhapontici, cape jasmine, pitch, Akebia stems and other Chinese herbal medicine components can free mammary gland, increase milk yield, and the pigling fed by the sow which eats the forage has high survival rate, strong physique and red and bright hair.