There is no way to detect irritable bowel syndrome by gastroscopy, and the disease requires various tests to exclude organic lesions before diagnosis can be confirmed. Irritable bowel syndrome is a common functional disorder of the lower gastrointestinal tract, with clinical manifestations such as abdominal pain, abdominal distension, and changes in bowel habits and stool characteristics. To confirm the diagnosis of irritable bowel syndrome, it is necessary to exclude some organic lesions in the abdominal cavity, digestive tract and gastrointestinal tract, such as tumors, inflammation and so on. And patients with persistent symptoms for 6 months can be diagnosed as irritable bowel syndrome. Treatment of the disease is mainly pharmacological, such as antispasmodic pivoxyl bromide, laxative lactulose and antidiarrheal loperamide. In case of discomfort, it is recommended to consult a doctor for targeted treatment. The medication should be taken under the supervision of a physician, do not take the medication by yourself.