Bowel movements may occur after a colonoscopy usually 24 hours later. Generally need to empty the intestine to do colonoscopy, after the examination, eat less food, and it is fluid, to form stool is more difficult, usually need a longer time to have some stool, generally after 24 hours there may be stool discharge, mainly depends on what you eat and the amount of food you eat, 3 to 4 days before the bowel movement is also normal. It is recommended not to eat too much for the time being after the examination, the food should be chewed carefully and then swallowed, in order not to stimulate the intestinal tract, to eat a light diet, avoid spicy, fatty, sweet and greasy food, avoid drinking alcohol, you can drink noodle soup or thin gruel, easy to digest, but also nutritious, generally one day later you can eat normally. Some patients will have slight abdominal pain and bloating after the examination, this is normal, you can do some simple activities to relieve the symptoms. If you cannot exercise, you can do abdominal massage to speed up the discharge of intestinal gas. Acute abdominal pain should be notified to your doctor immediately.