Director of Dermatology, Director of the Department of Dermatology and Venereology, Chief Physician, Professor, and Doctoral Supervisor. Specializes in psoriasis, lupus erythematosus, dermatomyositis, bullous disease, vasculitis, eczema and other immune and allergic diseases; facial cosmetology related diseases; sexually transmitted diseases; and dermal pathology. Professor Jin has rich clinical experience in diagnosing and treating a large number of difficult and complex cases. He has presided over the formulation of expert consensuses such as 'Glucocorticoid Treatment of Skin Immune-Related Diseases', 'Pemphigus Vulgaris', and 'Bullous Pemphigoid'. He has participated in the National Key R&D Program Precision Medicine Research Project and the Chinese Academy of Medical Sciences Medical and Health Science and Technology Innovation Project, and has presided over multiple research projects including the National Natural Science Foundation, the 'Belt and Road' Strategic Pilot Scientific Research Project, and the Beijing Natural Science Foundation. He hosts national continuing education projects such as the Peking Union Medical College Dermatology Summit Forum and Dermatopathology Training Classes, and leads multiple clinical new drug studies.