Patients with chronic obstructive pulmonary disease and lung cancer share a common etiology and pathogenesis of smoking and chronic inflammatory irritation. Therefore, patients with chronic obstructive pulmonary disease are reminded that in the long-term process of treating chronic obstructive pulmonary disease, as their condition progresses and they age, they should also consider the possibility of lung cancer when, for example, cough aggravation, hemoptysis and intrapulmonary masses occur and treatment according to chronic obstructive pulmonary disease is ineffective, so as to achieve early detection and treatment. We often come across a situation where a patient with lung cancer is regularly dispensed medication at the outpatient clinic and ignores the doctor’s recommendation for lung CT and pulmonary function tests, and then suddenly loses the opportunity for surgery due to the presence of blood in the sputum and then goes for another examination and finds that the mass in the lung has metastasized! Section experts, for the treatment of lung cancer multi-faceted efforts, and ultimately play a goal-focused effect.