Painless colonoscopy is generally not scary. Painless colonoscopy is primarily a colonoscopy performed while the patient is under anesthesia. Patients should eat a light diet the day before the examination and complete the bowel preparation, fasting for 8 hours before the examination, and patients should relax before the examination. Painless colonoscopy is generally not scary, because patients will be injected with anesthesia before the painless colonoscopy, and the colonoscopy will be performed under the state of anesthesia, and patients will not feel any pain. Patients should generally ensure a light diet before the painless colonoscopy, and should not eat spicy and stimulating foods, such as chili peppers and garlic. Patients should not eat on the day of the examination to avoid affecting the results. Patients should be calm and relaxed before the painless colonoscopy to avoid emotional tension. Painless colonoscopy is usually not scary, it is recommended that patients follow the doctor’s instructions before the examination oral compound electrolyte bulk for intestinal cleansing. After the painless colonoscopy, patients should eat a light diet, ensure adequate rest, avoid staying up all night and overwork.