How long can patients eat fish after surgery should be objectively analyzed based on the recovery of the patient’s condition after surgery, as well as the patient’s type of surgery and other factors: a. If the patient has undergone surgery to remove superficial scalp swelling, the pain of the incision is relieved, and the patient can eat fish at any time, which will not result in a delay in the healing of the incision. The rich nutrition within the fish is conducive to the faster growth of the incision. Second, if the patient due to acute suppurative tonsillitis tonsil removal, surgery 24-48 hours do not recommend patients to eat, so as not to cause bleeding and infection of the wound. 48 hours after the patient bleeding stops, inflammation subsides, you can eat fish. Third, if the patient due to sigmoid colon malignant tumor, radical tumor surgery, 72 hours of intestinal tube often can not defecate, exhaust, then eating fish will cause abdominal pain, abdominal distension and other symptoms. It is recommended that patients eat fish after 5 days of surgery, anal defecation and bowel movement.