The symptoms of redness in the urethra in men are commonly caused by urinary tract infections, more often seen in men with prepuce, accumulation of prepuce and internal shedding of epithelial cells, as well as mixed with bacteria, which can easily stimulate the urethra in men, resulting in redness and swelling. If there is a urinary tract infection, it will be accompanied by symptoms of frequent, urgent and even painful urination. Patients are advised to first check the urinary routine to clarify whether there is a urinary tract infection. There are also cases seen in men who have a more frequent conjugal life, due to the frequent and repeated impact on the front of the glans, which can also lead to redness and swelling of the urethra, without obvious discomfort, and the symptoms can be reduced through normal conditioning or rest. If the symptoms of redness always appear, it is recommended that men conduct a local examination of urethral secretions to clarify whether it is caused by disease, such as recent impure sexual intercourse thus leading to the emergence of sexually transmitted diseases, this situation have a history of impure sexual intercourse, for a basic review, if there are abnormalities should be treated in a timely manner.