Three months ago, 63-year-old Ms. Shen received a brain tumor resection in a local hospital due to meningioma, but on the second day after the operation, Ms. Shen suddenly appeared to have a consciousness disorder and continued to have a high fever. After a series of anti-infection treatment, her condition did not improve. After communicating with her family, the local hospital decided to perform a tracheotomy on Ms. Shen and wear a tracheal tube, after which Ms. Shen’s temperature and blood picture slowly became normal. Two days ago, on the third day after the tracheal tube was removed, Ms. Shen’s dyspnea suddenly worsened, and a tracheoscopy showed that the tracheotomy site had a stenosis of about 2cm, which was considered to be a risk of asphyxiation, and it was recommended that Ms. Shen be transferred to our hospital for further treatment. After Ms. Shen was admitted to the hospital, tracheoscopy was performed under general anesthesia. The tracheal tube was extubated and a rigid scope was inserted through the mouth. The lumen above the upper trachea was collapsed, with a 70% stenosis during inspiration, and there were a few granules and necrotic material, which were extracted by biopsy forceps, and frozen with carbon dioxide to remove the granules and necrotic material. The incision was enlarged at the original tracheotomy, and a T-shaped silicone stent was placed under direct rigid microscopic view, which was well positioned. There was intraoperative bleeding, which was stopped by intramucosal drug injection at the upper edge of the stent and argon knife cauterization. After the operation, Ms. Shen’s stridor improved significantly. Upper tracheal segment at the pneumonectomy site Upper tracheal segment at the collapsed T-tube Upper edge of the T-tube Inside the T-tube The Montgomery T-tube has been used exclusively by otorhinolaryngologists for many years. In recent years, due to the rapid development of respiratory interventional techniques, more and more respiratory physicians are also able to perform tracheotomies and T-tube placement via respiratory endoscopy. T-tube has good toughness and elasticity, which can reduce the irritation to the airway mucosa, and it is easy to be accepted by patients as it can not affect their daily life. It is suitable for patients with high airway obstruction who should not be placed with airway stent, as well as patients who have undergone or can undergo tracheotomy stoma. The T-tube should be followed up once a month before removal so that airway restenosis can be detected early for early intervention and treatment.