A bronchial eminence that is sharp and centered is a normal bronchoscopic presentation. The normal bronchoscopic presentation of a sharp and centered bronchial eminence indicates that the position of the eminence in this patient is free of deformity or alteration and that the patient is healthy. If the prominence is deviated to the left or right, and bleeding, ulceration, etc., it may indicate lung or mediastinal diseases. For example, foreign bodies, tumors, and inflammation can cause changes in the shape of the bulge. If the CT shows some changes on the bifurcation of the trachea, it is recommended to do a tracheoscopy, which can clarify the lesions related to the bulge under direct visualization, and can do a pathological biopsy to further clarify the disease situation.