Black fish is rich in high quality protein and various trace elements. After surgery, patients need to replenish high quality protein and various trace elements to help the wound healing process. The nutritional content of black fish can improve the body’s immunity, and also has a very good effect on preventing infection after surgery. But after the surgery to eat black fish also need to master a certain time limit, 12 hours after the surgery can not eat, this time also can not eat black fish. In addition, if it is gastrointestinal surgery within 3 days need to fast, later can eat normal diet or eat liquid food can eat black fish, but also black fish stew into fish soup to eat, can increase the absorption of nutrients. In addition, you can also eat other high-quality protein food after surgery, which is conducive to wound healing, such as milk, eggs, lean meat, fish and shrimp and other foods, which have a very good nourishing effect, can not eat spicy, stimulating food, and can not smoke, drink.