Positive DNA for Ureaplasma urealyticum often indicates the presence of Ureaplasma urealyticum infection in the body. Ureaplasma urealyticum is a common causative agent of non-gonococcal urethritis in men. Clinical symptoms are mainly burning urine, stinging urine, and increased white thin discharge from the urethra. The infection is usually transmitted through sexual intercourse and is a sexually transmitted disease. For Ureaplasma urealyticum infection, anti-inflammatory treatment with sensitive antibiotics, such as doxycycline and azithromycin, is usually used. In the acute stage, most of the symptoms can be relieved and the disease can be cured by medication. Men should pay attention to cleanliness and reduce or avoid unclean sexual contact as much as possible to prevent non-gonococcal urethritis.