The invention discloses a mid-term pregnant sow feed and a producing method thereof, and the mid-term pregnant sow feed comprises the following materials by weight: 180-200 parts of wheat bran, 160-180 parts of corn flour, 120-140 parts of silage, 50-80 parts of soybean powder, 20-30 parts of bean dregs, 30-50 parts of euonymus japonicas leaf, 20-30 parts of chestnut leaves, 30-40 parts of coral vine, 20-30 parts of sawdust, 20-50 parts of insect powder, 4-5 parts of dodder powder, 1-2 parts of montmorillonite powder, 0.5-1 part of cream, 0.2-0.4 part of butter, 3-5 parts of laver, 5-8 parts of doudan, 3-5 parts of bullfrog meat powder, 2-4 parts of fish and shrimp powder, 3-4 parts of cottonseed oil, 0.5-1 part of garlic powder, 1-2 parts of five spice powder, 8-15 parts of purple sweet potato, 4-6 parts of rice, 1-2 parts of tremella, 1-2 parts of dehydrated carrot grains, 1-2 parts of eucommia ulmoides, 1-2 parts of dipsacus, 1-2 parts of jujube flesh, 2-3 parts of dodder, 10-15 parts of an attractant, and proper amount of water. The mid-term pregnant sow feed is scientific in formulation, safe and reliable, and increases the farrowing number of sows.