Eating high protein foods, foods rich in vitamins and trace elements after surgery is good for replenishment. The diet of patients after surgery needs to be based on the recovery of the gastrointestinal tract. On the day after surgery, the function of gastrointestinal tract is still in paralyzed state, it is not suitable for diet at this time, and it is recommended to drink warm water or light salt water in moderation. After 1-2 days of postoperative anal defecation, you can consider starting a liquid or semi-liquid diet, and gradually transitioning to a normal diet after a number of days (the recovery time varies greatly from surgery to surgery). Postoperative recovery of the body, the need for appropriate supplementation of high-protein foods, such as a variety of lean meat, milk, eggs, tofu and so on. Patients with basically normal renal function, the intake of protein-rich food is conducive to the body’s tissue repair and growth, which is conducive to the recovery of the postoperative incision and the restoration of organ and tissue function. Postoperative patients should also try to supplement foods rich in vitamins and trace elements. Foods rich in vitamin C are mainly all kinds of fresh vegetables and fruits; it is also recommended to especially supplement foods containing iron, calcium, zinc and magnesium, such as animal blood products, all kinds of nuts, fish and shrimp seafood and so on. After surgery in the dietary care basis, more attention needs to be paid to the prevention of wound infection, do a good job of postoperative psychological comfort and conditioning of patients.