为评价聚合酶链反应（ＰＣＲ）诊断泌尿生殖系结核的临床应用价值，报告５６例病例，其中２０例病理确诊为泌尿生殖系结核，经ＰＣＲ阳性１８例。另３６例尿ＰＣＲ阳性初诊泌尿生殖系结核者，经抗痨治疗２个月后３１例症状逐渐消失，尿常规逐渐转为正常。认为ＰＣＲ技术对诊断泌尿生殖系结核有一定的价值。同时指出，减少假阴、假阳现象是值得临床重视的问题。 To evaluate the clinical value of polymerase chain reaction (PCR) in diagnosing genitourinary tuberculosis, 56 cases were reported, of which 20 cases were pathologically diagnosed as genitourinary tuberculosis and 18 were positive by PCR. Another 36 cases of urine PCR positive newly diagnosed genitourinary tuberculosis, after anti-tuberculosis treatment for 2 months, 31 cases of symptoms gradually disappear, urine gradually turned to normal. That PCR technology for the diagnosis of genitourinary tuberculosis have a certain value. At the same time, it is pointed out that reducing false negatives and false positives is a problem that deserves clinical attention.