Preoperative fasting for 10-12 hours and water fasting for 6-8 hours is required to prevent inadvertent aspiration of vomitus from anesthesia into the respiratory tract. Esophagus and cardia require 6-7 days of fasting after surgery, which is related to whether the esophageal anastomosis can heal. Usually 6-7 days after the patient’s anal venting, start eating clear water, first every 2 hours to eat once, 50 ml (one or two) each time, in the absence of discomfort, gradually increase the amount, 1 day after the full liquid (rice soup, soup, milk, etc.); after 3 days of eating still feel good can be changed to semi-liquid (porridge, rice paste, noodles, rice flour, steamed buns, buns, etc.), the amount of 1/3-1/2 of normal people, about 6 meals a day The diet should be small, chewed and swallowed slowly, and the normal diet can be gradually resumed about 3 weeks after surgery according to your own condition. After lung surgery, generally after 6 hours, you can eat liquid, and gradually transition to general diet in about 2 days. It is advisable to eat high protein, high vitamin, easy to digest diet, such as lean meat, fish, eggs, soybean products, fruits, vegetables, etc., to ensure adequate nutrition supply and improve the body’s ability to tolerate surgery and tissue repair power.