Intestinal hydrotherapy may disrupt the internal environment of the intestinal tract and cause intestinal dysfunction, leading to the development of constipation, indigestion, bloating and other symptoms. Intestinal hydrotherapy is a medical treatment that cleanses the intestines with a hydrotherapy machine using the enema principle, which flushes out the stagnant putrefactive substances from the intestines. It is commonly used in the preparation before intestinal endoscopy or X-ray enema examination to flush the intestinal tract and facilitate better observation of intestinal lesions; it can also be used as intestinal preparation before surgery and early recovery of intestinal function after surgery. However, if hydrotherapy is not done properly, it may damage the internal environment of the intestinal tract and disrupt the intestinal flora, which in turn leads to intestinal dysfunction and symptoms such as diarrhea, constipation, indigestion, and bloating. If any uncomfortable symptoms occur during the process of intestinal hydrotherapy, it is important to give timely feedback to the doctor in charge to avoid adverse consequences.