After painless colonoscopy, you need to pay attention to rest, easy to digest diet, observe the adverse reactions, etc. 1. Pay attention to rest: after painless colonoscopy, you need to pay more attention to rest on the same day, and you can’t do strenuous exercise. 2. Easy to digest diet: You can drink water within 1 hour after the painless colonoscopy, and eat easy-to-digest fluids or semi-fluids if there are no uncomfortable symptoms. For those who have undergone histologic biopsy, it is necessary to prohibit food and water for 6 hours, and after there is no abnormality, they can eat fluids or semi-liquids appropriately. 3. Observe the adverse reactions: some patients may have abdominal pain, blood in stool, diarrhea and other abnormal symptoms after painless colonoscopy, it is recommended to go to the hospital in time, and the professional physician will carry out the corresponding treatment. There are many precautions to be taken after painless colonoscopy, so it is recommended to follow the doctor’s instructions.