There are two kinds of professional difficulty. Type 1: Beijing, Tianjin, Hebei, Shanxi, Liaoning, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei, Hunan, Guangdong, Chongqing, Sichuan, Shaanxi, etc. 2 1 province (city); Category II: Inner Mongolia, Guangxi, Hainan, Guizhou, Yunnan, Tibet, Gansu, Qinghai, Ningxia, Xinjiang, etc. 10 provinces (regions).

Otolaryngology is a two disciplines under the first-class discipline of clinical medicine, which is mainly devoted to studying the etiology, pathogenesis, clinical manifestations, diagnosis, prevention and treatment of otorhinolaryngology diseases. Its research object is connected with the skull base and chest and abdomen, including the important organs of hearing and language communication and the portal of breathing and eating, adjacent to the brain, eyes, maxillofacial region and chest organs. Its disease is closely related to the whole body. With the development and deepening of basic science and related disciplines. Since the late 1960s, otolaryngology has been renamed as otolaryngology-head and neck surgery internationally. The study of hearing and balanced physiology, hearing and language rehabilitation, surgical treatment of head and neck tumors, the development of otorhinoneurosurgery and endoscope technology, and the introduction of microelectronics, molecular biology, immunohistochemistry and other research methods have made this subject a branch of clinical medicine with rich connotation and vitality.