Diabetic patients should follow the following principles in their diet after surgery: First, if diabetic patients undergo general anesthesia surgery, they usually need to fast for 24 hours after surgery, if the surgery does not affect the gastrointestinal function, they can eat normally after surgery, but they should mainly eat low sugar, low fat and easy to digest, and they should not eat food with too much sugar; Second, if the patient’s surgery affects the gastrointestinal function, they should take liquid food after exhaustion After a period of time, gradually transition to a semi-liquid diet, such as egg custard, tofu brain, etc.; Third, after surgery, patients are bedridden for a long time, gastrointestinal peristaltic function is slow, easy to cause constipation, so should eat more laxative, laxative food, such as a variety of fruits, vegetables and dried bamboo shoots, etc. It is recommended that diabetic patients should choose sugar-free foods when choosing their diet, and even if they eat fruits, they should not consume fruits with high sugar content.