Contraindications after lung cancer surgery generally include diet, activity and daily life. 1. Diet: Avoid greasy, spicy, stimulating and pickled food, so as not to affect the digestive function, which is not conducive to the recovery of the body. Lung cancer patients can eat light fluid or semi-fluid diet after the recovery of intestinal peristalsis; if there is no discomfort after eating, they can change to general diet, and it is better to eat high-calorie, high-protein and easy-to-digest food to provide nutrition and promote wound healing. 2. Activity: It is forbidden to lie in bed all the time after the operation, so as not to affect the recovery of the body, and even lead to complications. Functional exercise should be carried out under doctor’s guidance after the vital signs of the postoperative period are stabilized, in order to prevent pulmonary atelectasis, improve respiratory and circulatory function, and enhance appetite. 3. Daily life: avoid smoking, drinking and staying up late and other bad habits, so as not to cause the condition to deteriorate. After surgery, patients should develop good living habits, quit smoking and drinking, and keep enough sleep and a good mindset. After lung cancer surgery, patients should follow the precautions given by doctors and inform doctors in time if they have any uncomfortable symptoms.