After colonoscopy, how long you can drink water depends on the patient’s own pain, abdominal swelling and other conditions. Some patients do not have discomfort, then you can drink water after 1 hour to avoid abdominal pain caused by premature water; there are patients in the colonoscopy, the relevant treatment, at this time need to strictly follow the doctor’s instructions, comply with the time of fasting, water: 1, only colonoscopy: under the guidance of professional doctors only do colonoscopy, did not appear abdominal pain and swelling and other discomfort patients recommended to drink water after 1 hour to avoid Intestinal gas accumulation occurs after intestinal stimulation with water and food. In addition, try to drink a small amount of warm water, and take a sitting or standing position to avoid choking; 2, colonoscopy with other surgeries: If the patient is doing colonoscopy at the same time, other surgeries, such as colon polypectomy. The doctor will decide the time of fasting and water according to the patient’s condition and the degree of surgery, and the food should be mainly liquid during the postoperative recovery period. After colonoscopy, patients need to pay attention to the fact that if there is mild abdominal pain, it may be caused by the irritation of the intestine, which usually does not require too much worry and can be relieved by itself without special means of treatment. However, if the pain is severe, it is necessary to seek medical attention in time to avoid delaying treatment and causing intestinal perforation.