The main symptoms of irritable bowel syndrome are abdominal pain, bloating, constipation, and in some patients, upper gastrointestinal symptoms, psychiatric symptoms, and other extraintestinal symptoms, with no obvious complications. Most patients have a slow onset of symptoms. Patients with irritable bowel syndrome usually have abdominal pain after eating, and abdominal distension is obvious during the day and slows down at night; some of them have symptoms such as increased frequency of defecation, difficulty in defecation, dry stools, etc.; there are also other symptoms, such as headache, fatigue, difficulty in urination, sleep disorders, palpitations, etc.; in severe cases, it may also lead to anemia, electrolyte disorders, and nutritional deficiencies. If the above symptoms occur, it is recommended that the patient go to the hospital in time, complete the relevant examinations, and choose the appropriate treatment and medication under the guidance of the doctor.