The comprehensive strength of the First Hospital of Sun Yat-sen has long occupied the top three seats in South China, and it is also a large-scale general hospital with a high reputation in the country. Its Department of Dermatology and Venereology is one of the earliest departments to carry out dermatopathological examination in the province, and has accumulated rich diagnostic experience in the past 20 years, and enjoys a high reputation in the province and outside the province. The Department of Dermatology of the First Hospital of Zhongshan has 10 specialties, among which the STD Diagnosis and Treatment Center includes a STD laboratory, which was the first unit to pass the provincial "three-level" standardized laboratory review in 2003 to meet the needs of many STD clinicopathological medical examinations, especially the earliest Chlamydia trachomatis culture and drug susceptibility test in China, which provides great help for the diagnosis and treatment of related sexually transmitted diseases. In terms of physicians, He Dingyang and Han Jiande, two chief physicians of dermatology with more than 30 years of experience in the diagnosis and treatment of venereal diseases, are also dermatologists who are consulted by patients on the Internet. The strength of the Department of Urology of the First Hospital of Zhongshan is also good, as the key discipline of the Provincial High Court and the key discipline of the hospital, its six subspecialties basically cover all the diseases of urology, with an annual outpatient volume of nearly 50,000 person-times, and an annual outpatient volume of 5,000 person-times for male specialties.