Patients with irritable bowel syndrome can be treated with probiotics such as Bifidobacterium, Lactobacillus and Clostridium casei. 1. Bifidobacterium: It is made by using cultured bifidobacteria, collecting bacteria, freeze-drying and forming bacterial powder, and mixing with dressings, which can act on the surface of the intestinal mucosa to form a protective barrier, inhibit the invasion of pathogenic bacteria, and play a role in the treatment of acute and chronic diarrhea, intestinal dysbiosis and other diseases. 2. Lactobacillus: It can form a protective film in the intestinal tract, prevent the invasion of viruses and pathogenic bacteria, improve the immunity of the intestinal tract, and selectively kill the intestinal pathogenic bacteria, while protecting the growth of beneficial bacteria. 3. Clostridium Typhimurium: It can be used to treat various digestive symptoms, dyspepsia, acute and chronic diarrhea and other diseases caused by intestinal flora disorders, and can also be used in the treatment of irritable bowel syndrome. Patients with irritable bowel syndrome who need to use probiotics for treatment are advised to take them under the guidance of a doctor.