After having a colonoscopy, it is usually necessary to rest for 3 days. After the colonoscopy, patients should eat fluids, light and nutritious diets, within 3 days, it is best to eat nutritious, light and easy to digest fluids, such as millet porridge, noodles, broth, fish soup, bone broth, chicken broth, etc. After the colonoscopy, it is important to pay attention to the appropriate activities, which will help to recover the function of the gastrointestinal tract. 3, after the colonoscopy, pay attention to the abdominal pain, diarrhea, bloating and so on. After colonoscopy, you should pay attention to the occurrence of abdominal pain, diarrhea, abdominal distension and so on. If abdominal pain, diarrhea, abdominal distension, or even fever occurs, the patient should go to the hospital in time.