The invention discloses a nutritional feed for a suckling sow and a preparation method of the feed. The nutritional feed comprises the following raw materials in parts by weight: 140-180 parts of yellow bean powder, 100-150 parts of corns, 80-100 parts of wheat powder, 20-30 parts of maize embryo cakes, 40-50 parts of pumpkin powder, 60-80 parts of tofu residues, 3-5 parts of chicken powder, 2-3 parts of lard oil, 6-10 parts of peanut powder, 0.5-1 part of large red jujubes, 8-12 parts of nitraria tangutorum bobr fruit residues, 6-12 parts of sea buckthorn fruit residues, 2-3 parts of dark plums, 1-3 parts of dark plum beans, 5-7 parts of crucian carp, 0.05-1 part of soy, 0.05-1 part of rice vinegar, 0.1-0.2 part of sesame oil, 2-3 parts of asparagus lettuce, 1-2 parts of codonopsis pilosula, 1-2 parts of astragalus membranaceus, 1-3 parts of loranthus parasiticus, 1-2 parts of coix seeds, 2-3 parts of fish meal, 10-20 parts of wheat straws, 15-30 parts of fine rice bran, 5-10 parts of a phagostimulant and a proper amount of water. The feed is high in protein content and can promote physical restoration, milk secretion and healthy growth of the sow.