There are no clear contraindications to having a colonoscopy. Most patients do not need to be overly nervous after colonoscopy if they do not have clear symptoms of discomfort. Electronic colonoscopy is one of the most common examinations in gastroenterology, including general colonoscopy and painless colonoscopy. Colonoscopy is important for the diagnosis and treatment of many digestive diseases, such as chronic colitis, colon polyps, colon cancer and so on. After the completion of colonoscopy, there is no clear contraindication, mostly can carry on normal work and life. After colonoscopy, you should pay attention to rest and nutrition, but with light diet; after polypectomy or other treatments, you should pay attention to observe whether there is secondary bleeding or other uncomfortable symptoms, and those who have obvious symptoms should consult a doctor in time. After the completion of colonoscopy, if there are uncomfortable symptoms, you need to go to the hospital for formal diagnosis and treatment.