阴茎勃起受心理、神经、内分泌、血管等多种因素的调节。阳萎是上述若干因素失去调节而导致以阴茎勃起困难为特征的男性性功能障碍。随着阴茎勃起的生理机制、血流动力学和药理学的认识加深,以及临床上各种新的诊断技术的开展,使过去Stafford(1954)认为男性勃起功能障碍90％为精神性、心理性,10％为器质性的概念起了变化,现在一般报道器质性阳萎的发病率已为30-50％。Sucks 1983年234例一组阳萎病人的病因分析,器质性病变占60％,因此,许多过去认为都是精神性阳萎的病人,通过夜间勃起监测、罂粟碱试验、性激素测定、阴茎动脉压及血流图的测定、阴茎海绵体造影、阴部内动脉造影等许多现代诊断手段,可以明 Penile erection by psychology, nerves, endocrine, blood vessels and other factors in the regulation. Impotence is a male sexual dysfunction characterized by the loss of regulation of several of the above-mentioned factors that contributes to erectile dysfunction. As the physiological mechanism of penile erection, hemodynamics and pharmacology deepen, as well as the clinical development of a variety of new diagnostic techniques, the past Stafford (1954) that 90% of male erectile dysfunction is spiritual and psychological , 10% for the organic concept has changed, now generally reported the incidence of organic impotence has been 30-50%. Sucks 1983 234 cases of a group of impotence patients etiology, organic disease accounted for 60%, therefore, many in the past are considered mental impotence patients, by night erectile monitoring, papaverine test, sex hormone test, penile artery Pressure and blood flow measurement, penile cavernous contrast, intra-genital artery angiography and many other modern diagnostic methods, it is clear