Recently, something happened to me, a sister-in-law of mine, 37 years old, had a dry cough for 2 months, did not pay too much attention to it, in a small clinic for a period of time to put on a drip but did not get well, which went to the hospital for examination, the result was a late stage lung cancer. When the whole family heard the news, they could imagine how unacceptable it was. At such a young age, she got lung cancer, and she had missed the chance of surgery. Lung cancer is becoming more and more common in the younger age group around me, and the malignancy level is usually very high, and when it is detected, the best time for surgery is missed. People with family history of lung cancer, smokers, and those who are in contact with asbestos and radioactive substances should be alert to the symptoms of cough, chest tightness, shortness of breath, blood in sputum, fatigue, and lethargy, and should go to the hospital in time for checkup, and take a chest radiograph or chest CT, so as to discharge the possibility of lung cancer. Feng Junpeng, Minimally Invasive Thoracic Surgery Department, Hebei Provincial Chest Hospital, China