Enemas are not administered into the stomach. An enema is a technique used to determine diagnostic and therapeutic goals by pouring a certain amount of liquid from the anus through the rectum and into the colon to help the patient clean the intestines, defecate, evacuate, or be supplied with medication from the intestines. Since enemas do not reach the stomach, they are not administered into the stomach. Enemas are generally indicated to assist in the treatment of intestinal disorders such as constipation and can also be used for preoperative preparation of the bowel. Generally, patients need to fast for 5 hours after the enema, and avoid excessive force during defecation. But for inflammatory bowel disease and other drugs retained enema, do not need to fast, need to follow the doctor’s instructions. Therefore, when the patient has discomfort symptoms need enema, it is recommended to go to the hospital in time to improve the relevant examination, identify the cause of the disease, under the guidance of the doctor to standardize the treatment.