The patient, a 23-year-old female, was admitted with a cough and sputum for 3 months, aggravated with chest tightness and breathlessness for 2 days. Preoperative tracheoscopy was consistent with the manifestation of tracheal tuberculosis. There was mucosal congestion throughout the trachea, granulomatous tissue hyperplasia, a large amount of cheese adhering to the wall, and narrowing of the lumen. The trachea was treated with argon knife to cauterize the caseous material and frozen excision under tracheoscopy several times. Wang Xiaoping, Department of Respiratory Medicine, Shandong Chest Hospital After 1 month of treatment, the patient’s lesion improved significantly, and then the tracheoscope was not reviewed as prescribed. After 3 months, the patient’s chest tightness worsened, and the tracheoscope was reviewed. The patient’s condition recurred, and the luminal scar stenosis in the lower and middle trachea was about 3 mm in diameter. A silicone stent was implanted. During the operation, high-frequency electric cutting and high-frequency electric cutting were first applied to the scar stenosis, and the stenosis lumen was dilated and then a silicone stent was implanted. One week after the operation, the chest CT examination showed that the lumen was clearly open before the stent implantation. One month after the operation, the tracheoscope was reexamined, and the stent was well placed and expanded, the lumen was clear, and there was no granulation tissue growth. He was instructed to review the tracheoscope once a month and to evaluate his condition after 3 months of illness and remove the stent as appropriate.