Rheumatology and immunology department mainly focuses on diseases related to rheumatism and immunity. Clinically, rheumatism includes more than 100 diseases in ten major categories, including a major category of connective tissue diseases, spinal joint diseases, and other diseases related to rheumatism. Common connective tissue diseases mainly include rheumatoid arthritis, systemic lupus erythematosus, Sjogren's syndrome, polymyositis, dermatomyositis, scleroderma, mixed connective tissue diseases, and systemic vasculitis. Of course, it also includes gout, pseudogout, osteoarthritis, ankylosing spondylitis and arthritis related to infection, trauma, etc. Therefore, rheumatism and immunology diseases are very widespread, and most of them will lead to multi system and multi organ involvement.