After minimally invasive rectal surgery it is usually after 6 hours that you can drink water. Rectum is the end organ of human digestive tract except anus, which is about 7-8 meters away from the mouth and about 7 meters away from the stomach cavity. After drinking water, human beings generally stay in the stomach cavity, a small amount of water can be absorbed by the stomach in less than 20 minutes, and a large amount of water is partially absorbed in the stomach, part of the water will be discharged to the small intestine for further absorption, but the water that reaches the large intestine is even less. The human body’s digestive tract will have uninterrupted production of digestive juices even without food and water, so drinking water at an early stage after minimally invasive rectal surgery will not have any effect on the wound, and you only need to control the amount of water intake of no more than 100 milliliters at a time. At the same time, rectal surgery is generally used in the general anesthesia technique, before the anesthesia awake to drink water there is a risk of aspiration, so it should be at least 6 hours after the operation, and there is no reaction to the discomfort of anesthesia before you start to drink water in small amounts and times.