NGU是由除奈瑟氏淋球菌以外的多种病原菌引起的泌尿生殖道感染，其中沙眼衣原体（CT）和解脲支原体（UU）是最主要的致病菌，分别占NGU的50-60％和20-30％。

NGU is caused by several kind of pathogens except Gonococca. Chlamydia trachomatis (CT) and Ureaplasma urealyticum(UU) are the major pathogens , leading to 50-60% and 20-30% of NGU separately.

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