The invention discloses a method for producing a functional microbial fermented feed. The method uses soybean meal, fulvic acid powder, corn syrup powder, wheat bran, rice bran powder and Chinese herbal medicines including Sichuan phellodendron bark powder, powder of coptidis roots from Sichuan of China, scutellaria root powder, astragalus root powder, and isatis root powder as fermentation raw materials, and uses bacillus subtilis, bacillus licheniformis, lactococcus lactis, and brewer's yeast mud as beneficial microbial flora. The seed liquids of bacillus subtilis, bacillus licheniformis andlactococcus lactis, and the brewer's yeast mud are mixed with the fermentation raw materials in proportion, and the mixture is subjected to four stages including aerobic fermentation, anaerobic fermentation, sterile air fermentation and anaerobic fermentation to obtain the functional microbial fermented feed. The product of the invention is rich in nutrients, has good attracting property, and good disease resistance and disease prevention effects, and obviously promotes the growth effect of cultured animals. At the same time, the functional microbial fermented feed can also improve the breeding environment and purify water, and is a green, safe and efficient functional microbial fermented feed.