自１９７９年发现前列腺特异性抗原以后，其对前列腺病变的诊断及癌治疗效果观察越来越具有重要意义，但在开始应用时，由于其敏感性和特异性较低而限制其广泛应用，近年来经过对其进一步研究，使其敏感性和特异性明显提高，而且在临床应用中也有了深入的认识。 Since the discovery of prostate-specific antigen in 1979, it has become more and more important for the diagnosis of prostate lesions and the observation of the effect of cancer treatment. However, its application in the beginning of its application has limited its wide application due to its low sensitivity and specificity. In recent years, To further its research, so that its sensitivity and specificity increased significantly, but also in clinical applications also have in-depth understanding.