Abstract:Objective:To understand the etiology, clinical characteristics, key points of diagnosis and treatment of ectopic intratracheal thyroid tissue, in order to improve clinicians" understanding of endotracheal ectopic thyroid gland and prevent missed diagnosis and mistreatment. Method: The clinical diagnosis, treatment and prognosis of one cases of ectopic intratracheal thyroid tissue were reported, and the review was carried out in combination with relevant literature at home and abroad. Results: Ectopic intratracheal thyroid tissue was mostly visited due to tracheal obstruction and dyspnea, which was relatively difficult to make preoperative differential diagnosis and was prone to misdiagnosis and missed diagnosis. Conclusion: Ectopic intratracheal thyroid tissue is a rare disease caused by embryonic development defects, and the diagnosis needs to be based on pathology, and surgery is the main treatment method, and the prognosis is good.