The following drugs are available for the treatment of IBS: 1. PPI inhibitor acid-suppressing drugs: mostly rabeprazole, omeprazole, pantoprazole, esomeprazole, etc. H2 receptor blockers, ranitidine, famotidine, etc. 2. drugs to improve gastrointestinal function: e.g. Bifidobacterium complex acid-activating capsules, pivetonium bromide tablets, etc. 3. drugs in the Chinese category: e.g. stomach power capsules, Puyuan and stomach capsules, rehabilitation new liquid, etc. 4, drugs to regulate intestinal function: such as Mosapride Citrate Capsules, Itopride Tablets. For improving gastrointestinal function among the drugs to improve IBS, the diagnosis of gastrointestinal function needs to be clarified, and if it is chronic gastritis, gastric ulcer, active symptomatic treatment is needed. Functional gastrointestinal dysfunction, that is, gastroenteritis caused by irritable bowel syndrome, needs to be given to regulate the gastrointestinal function drugs, such as flupirtation ton melitrexin tablets, glutathione tablets, tranquilizer and other symptomatic treatment.