Probiotics can promote the absorption of nutrients, improve immunity and maintain the stability of intestinal flora. Probiotics are a kind of active microorganisms that can be planted in the human body, and can change the composition of the flora in a certain part of the host and be beneficial to the host; they can play a series of roles such as promoting the absorption of nutrients, improving the immunity of the body, maintaining the stability of the intestinal flora structure, protecting the intestinal mucous membrane barrier, and inhibiting the intestinal inflammation. Allergic to this drug is prohibited. In daily life, for constipation or diarrhea, indigestion, congenital lack of lactase and other people can be appropriate to supplement probiotics. People who need to supplement probiotics are recommended to take it under the guidance of a doctor.