以咳、喘、憋气等为主要表现的呼吸系急症在门（急）诊就诊者中占很大比例，需尽快明确诊断，予以处置。临床上发生于气管内的腺样囊性癌，表现有其特殊性，多数患者存在被延误诊断的情况，故应提高对该病的认识。尽管是少见病，但若对其特点有所了解，将有助于尽早诊断。对此? Respiratory emergencies characterized by cough, asthma, and belching constitute a large proportion of patients attending emergency (emergency) consultations. They must be diagnosed as soon as possible and be disposed of. Clinical manifestations of adenoid cystic carcinoma in the trachea, the performance of its particularity, the majority of patients with delayed diagnosis, it should improve the understanding of the disease. Although rare, if you understand the characteristics, it will help you diagnose as soon as possible. For this?