The gastric discomfort after the colonoscopy may be caused by the irritation during the colonoscopy, which can be observed temporarily with a light diet. If the symptoms of gastric discomfort persist, it can be considered that there are gastric diseases in the body, and timely medical treatment is needed. 1. Temporary observation: colonoscopy requires injecting gas into the large intestine, which causes abdominal distension, which in turn leads to stomach pain and other symptoms of stomach discomfort. It is a normal phenomenon after colonoscopy, no need to be too nervous, after a day or two can be relieved on their own. When the stomach is particularly uncomfortable, you can prepare a hot water bag to apply hot compresses to the abdomen. 2. Light diet: During the temporary observation period, you need to have a light diet, eat more easy-to-digest food, such as porridge, soups, etc., and eat less spicy, irritating, cold and other types of food. 3. Timely medical treatment: gastric discomfort after colonoscopy is not necessarily just a gastric disease, especially after microscopic treatment, if the discomfort persists, abdominal pain and fever, bleeding, etc. should be timely consultation, detailed examination. Don’t be too nervous about doing a colonoscopy stomach discomfort, such as stomach discomfort lasts too long need to consult a doctor in a timely manner, follow the doctor’s advice and active treatment.