Penile lifting without firmness, i.e. erectile dysfunction, may be related to physiological factors, abnormalities of the penis itself, vascular lesions, endocrine abnormalities and other pathological factors. 1. Physiological factors: Erectile dysfunction may occur when there is too much tension and anxiety, too much pressure at work, and too much physical exhaustion. Generally, it can be relieved after sufficient rest. 2. Pathological factors: (1) Abnormalities of the penis itself: for example, the penis has a small penis, penile curvature, penile trauma, supra- or infra-urethral cleft, etc., which can cause erectile dysfunction. (2) Vascular lesions: for example, atherosclerosis and arterial stenosis can lead to insufficient blood supply to the penis; or congenital venous insufficiency and thinning of the cavernous leukomalacia may lead to blood not being able to be retained in the cavernous body. These two conditions can also cause patients with erectile dysfunction. (3) Endocrine abnormalities: for example, testicular hypoplasia, hypothalamic-pituitary-gonadal dysfunction, etc. cause low androgen levels and low testosterone levels, thus producing erectile dysfunction. In addition to the above factors, erectile dysfunction may also be caused by other factors, and patients are advised to go to regular hospitals in time for standardized treatment.