Tracheal diverticula can be divided into congenital and acquired diverticula, and they can be distinguished according to the site of origin, histologic structure, and clinical manifestations. 1. Site of origin: congenital tracheal diverticulum is the blind end of primitive lung degeneration, which may also be caused by dorsal developmental defects of the trachea during the sixth week of embryonic development. The congenital tracheal diverticulum is at the thoracic inlet, where the right side of the trachea is relatively weak. 2. Histologic structure: The diverticulum of congenital diverticulum is small and the opening to the trachea is also small, with an anatomic structure similar to that of the trachea, including the tracheal wall and smooth muscle and columnar epithelium. Acquired diverticula have larger openings and consist of tracheal epithelium that does not contain smooth muscle and cartilage. 3. Characteristics: Most common in males, congenital tracheal diverticula occur below the vocal cords and are sometimes associated with congenital disorders such as tracheospasm. Acquired diverticula occur anywhere, preferably on the right posterior side of the thoracic inlet trachea. When diagnosed with this disease, you should actively cooperate with your doctor and choose the best treatment plan under his or her guidance.