Artificial feed additive for improving fecundity of fragrant snails

The invention discloses a feed additive for improving the reproductive capacity of cultured fragrant snails, which is prepared by mixing the following bacterial solutions in percentage by mass: 50% of bacillus subtilis, 30% of lactobacillus plantarum, 10% of clostridium tyrobutyricum and 10% of saccharomyces cerevisiae, and the bacillus subtilis, the lactobacillus plantarum, the clostridium tyrobutyricum and the saccharomyces cerevisiae are used as the bacterial solutions of bacillus subtilis, lactobacillus plantarum, clostridium tyrobutyricum and saccharomyces cerevisiae. The bacterial activity of the bacterial liquid of the bacillus subtilis, the lactobacillus plantarum and the clostridium tyrobutyricum is at least 109 cuf/mL, and the bacterial activity of the saccharomyces cerevisiae liquid is at least 108 cuf/mL. When the feed additive is added into the artificial feed of the fragrant snails, the gonad development of the breeding snails can be obviously promoted, the food intake of the breeding snails can