Try not to drink milk before doing colonoscopy, to avoid causing irritation to the gastrointestinal tract, or after drinking milk, resulting in mucous membrane covering, thus affecting the examination. Another point is that before doing colonoscopy need to drink laxatives in conjunction with the situation, for intestinal preparation, it is recommended that must be based on the attending physician’s advice for formal preparation, never take certain drinks or eat certain foods on their own, but formal examination and preparation, so that it is conducive to clarify the condition. Patients can combine the situation, appropriate diet, lifestyle adjustment, it is recommended that before doing the examination, to follow the instructions of doctors and nurses to give formal treatment. If the colonoscopy found that there are intestinal abnormalities, can be combined with the situation of targeted treatment, such as commonly used drugs such as bifidobacteria triple live bacterial capsules, etc., the patient’s usual diet must pay attention to light, easy to digest, avoid eating stimulating food.