Prostatic discharge containing many septic cells is one of the typical manifestations of Reiter syndrome, a group of diseases in which fever, skin and mucous membrane damage, urethritis and conjunctivitis are the main manifestations. It’s a common occurrence in adult men. The following is a brief introduction: the cause of this disease is unknown, can be related to infection, including bacterial, viral and mycoplasma infection. Partly as a systemic complication after dysentery, some believe it is related to allergic reactions, endocrine disorders, and others believe it is related to drug allergies, such as penicillin, sulfonamide, and salicylic acid preparations. Genetic and immunological theory, because patients with this syndrome have increased sedimentation, positive C-reactive protein, increased IgG, IgA and α2 globulin, and aseptic synovitis can occur after non-bacterial urethritis or enteritis, suggests that immune factors have a role in the pathogenesis. However, the presence of a generalized humoral or cellular immune abnormality as in SLE has not been confirmed, and the present arthritis may not be caused by antibodies or T cell-mediated responses. Chlamydia has recently been detected in the synovial membrane of some patients, perhaps suggesting that some bacterial component hidden in the joint triggers inflammation.