The invention discloses a sow postnatal tonic and lactation-promoting feed, and a preparation method thereof. The feed comprises the raw materials of, by weight, 140-160 parts of soy flour, 100-150 parts of corn flour, 100-120 parts of soybean meal, 120-140 parts of wheat flour, 70-90 parts of distiller's grain powder, 20-30 parts of peanut powder, 15-20 parts of chicken blood meal, 30-40 parts of rice bran, 10-18 parts of pig tripe, 8-10 parts of chicken, 0.5-1 part of peppercorn, 2-3 parts of rice wine, 0.3-0.8 parts of ginger, 0.5-1 part of curry powder, 1-2 parts of cordyceps flower, 2-3 parts of red date, 1-2 parts of wolfberry, 3-4 parts of Chinese yam, 5-7 parts of fragrant rice, 3-4 parts of mung bean, 2-3 parts of red bean, 4-6 parts of sorghum, 1-2 parts of motherwort, 1-2 parts of scirpus yagara, 1-2 parts of red peony root, 0.5-1 part of stir-fried malt, 11-15 parts of an attractant, and proper amount of water. The formula of the feed is scientific and reasonable. The feed has rich nutrient. With the feed, sow physical recovery can be accelerated, and lactation can be enhanced.