If the degree of poor liver function is mild, lung cancer surgery is usually possible. If the degree of poor liver function is severe, lung cancer surgery is not allowed. Lung cancer is a common malignant tumor disease that originates from lung tissue in clinical practice. Determining whether people with bad liver function can have lung cancer surgery needs to be determined on a case-by-case basis, and cannot be generalized, but mainly depends on the degree of damage of liver function. If the patient’s poor liver function is only slightly impaired, he/she can have lung cancer surgery in general. However, for patients with poor liver function and more serious liver damage, lung cancer surgery is not allowed, mainly because it will increase the risk of surgery to a certain extent, and may aggravate the primary disease, and usually the patients need to cooperate with the doctor to carry out liver-protecting treatment. Lung cancer surgery is suitable for all patients with early and middle stage lung cancer as well as a few patients with middle and late stage non-small cell lung cancer. All in all, doctors will take into account the specific conditions of the patients to determine whether they can undergo surgery or not. Patients need to cooperate with doctors for treatment, strengthen daily life management and follow up on schedule.