Postoperative precautions mainly include diet, changing medication on time, protecting the drainage tube, etc., as follows: 1. Diet: patients should avoid drinking beverages containing alcohol, and try not to eat too spicy food, because these may lead to gastrointestinal discomfort, and at the same time will also cause itching, discomfort, pain and other symptoms at the wound, and is also prone to promote scarring hyperplasia. Also try not to eat overly oily foods, such as braised meat, fatty sausage and squid. If the doctor allows, you can properly intake of fresh fruits and green vegetables, proper intake of low-fat high-quality protein, commonly found in fresh fish and shrimp, which can help the body to recover as soon as possible; 2, change the medicine on time: you should go to the hospital on a regular basis for a change of medicine, in order to observe the situation of the trauma; 3, to protect the drainage tube: if there is a drainage tube on the body, it needs to be protected in order to prevent detachment, and at the same time, it needs to be measured drainage The fluid and the nature of the drainage. Other precautions can be consulted with the attending physician.