Lactobacillus salivarius SM4 and application of lactobacillus salivarius SM4 in preparation of food and medicine for aiding digestion and improving constipation

The invention belongs to the technical field of probiotics and application thereof, and particularly relates to lactobacillus salivarius SM4 and application of the lactobacillus salivarius SM4 in preparation of food and medicine for aiding digestion and improving constipation. According to the invention, a strain of combined lactobacillus salivarius SM4 is separated and purified from an excrement sample of a healthy adult in Guangdong China, and the strain has a plurality of probiotic effects including excellent protease activity, excellent cellulase activity, inhibition of alpha-glucosidase activity, inhibition of acetylcholinesterase activity, and the like. The activity of xanthine oxidase can be inhibited. Therefore, the strain has the effects of promoting digestion and absorption of protein food and improving protein allergy; absorption of cellulose is promoted, and constipation is improved; reducing blood sugar; the traditional Chinese medicine composition can be used in the fields of aiding digestion, i