It is forbidden to eat and drink before having colonoscopy polyp surgery, the day before the surgery, you can eat some light and easy to digest food during the day, and you can’t eat the night before the surgery. Make sure your intestines are clean before having colonoscopic polyp surgery, because if there is feces in the intestines, it will not only affect the surgical field of view, which may lead to failure of the surgery, but also affect the wound healing after the surgery, and there is a possibility of infection. If you are preparing for colonoscopic polypectomy the next day, you can eat some well-digested food on that day, such as millet porridge, thin rice, noodles, etc. You can’t eat coarse fiber food or dry and hard food. You also need to take bowel cleansers and water as prescribed by your doctor, which will help you with the operation and recovery after the surgery. Have done colonoscopy polyp surgery within three days after the need for a liquid diet, trauma is large or combined with bleeding may need to fasting water, three days later if there is no obvious abdominal discomfort can resume a normal diet. Post-operative activities should be moderate, avoid strenuous exercise, post-operative also need regular review, if the stool is not shaped or blood in the stool, you need to consult a doctor in time.