Irritable bowel syndrome includes intestinal symptoms such as abdominal pain and bloating, constipation, and diarrhea, and extraintestinal symptoms such as urinary and psychiatric symptoms. 1. Intestinal symptoms: (1) Abdominal pain and bloating: the nature of abdominal pain is diverse and the location is not fixed, some patients are easy to appear after eating, and can be relieved after defecation. Abdominal distension is heavier during the daytime, especially in the afternoon, and is relieved at night after sleep, and some patients also have gastrointestinal symptoms such as nausea and vomiting. (2) Diarrhea: increased frequency of defecation, thin feces, pasty or watery, may contain a lot of mucus, persistent or intermittent episodes. Some patients may be triggered by eating, and there may be alternation between diarrhea and constipation. (3) Constipation: the number of bowel movements is significantly reduced, defecation is difficult, the stool is dry and may contain a lot of mucus, constipation may be intermittent or alternating with diarrhea. 2. Extra-intestinal symptoms (1) Urinary symptoms: frequent urination, urinary urgency, difficulty in urination. (2) Mental symptoms: anxiety or depression often occurs leading to insomnia, palpitations, etc. (3) Other: fatigue, headache, bad taste in the mouth, back pain and other discomforts. There may be other symptoms of Irritable Bowel Syndrome. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.