The white color of the urethral opening is a possible cause: first, the chronic phase of periurethritis. When the acute phase of periurethritis occurs, there can be redness and swelling, and the chronic phase can appear with white mucous membrane of the urethra, or with discharge, with local hardening or with poor local elasticity, with chronic pain and other symptoms. Secondly, white discharge around the urethra is mostly caused by fungal infections, with white filamentous or flaky discharge. The white filamentous or flaky discharge appears around the urethra or distributed on top of the glans, accompanied by local itching or with local pain, may be accompanied by local erythema formation, the erythema may also be accompanied by small herpes and other changes. A smear examination of local secretions is needed to confirm the diagnosis of fungal infection. Thirdly, the glans is locally stimulated by mechanical physical stimulation. The acute phase can produce redness and swelling, and during the recovery period there can be fibrous hyperplasia resulting in a slightly whitish local color, and local scarring can also be formed.