Bacillus-subtilis-contained artificial milk extract premix for pigs and application of premix

The invention provides a bacillus-subtilis-contained artificial milk extract premix for pigs and application of the premix. According to the prescription, the premix comprises the following components in percentage by weight; 30%-60% of carrier, 1%-4% of bacillus subtilis, 1%-4% of lactobacillus acidophilus, 3%-10% of coated zinc oxide, 1%-2% of chitosan oligosaccharide, 1%-2% of mannan oligosaccharide, 1%-3% of compound enzyme preparation, 10%-30% of lysine, 10%-40% of methionine, and 1%-5% of sweetener. The bacillus-subtilis-contained artificial milk extract premix can be used for improving the immunity of piglets, enhancing the feed digestibility, emarkably decreasing the diarrhea rate of weaned piglets, and improving the physical conditions of the piglets, thus greatly improving the production performance of the weaned piglets.