An erection that weakens in a few seconds is a phenomenon that is usually common in patients with impotence. Due to the existence of impotence, resulting in insufficient blood supply to the corpus cavernosum of the penis, so men have sexual stimulation during sex, but due to the lack of blood supply to the corpus cavernosum, easy to cause the penis to easily weaken. The causes of this phenomenon are manifold, for example, there may be penile vascular lesions, resulting in narrowing of blood vessels, causing insufficient blood supply to the corpus cavernosum; it may also be due to psychological factors, and generally can be improved through drug treatment to improve this symptom. Clinically, vasoactive drugs such as sildenafil and tadalafil can be preferred for oral administration, which can improve the blood supply of the corpus cavernosum, thus achieving the therapeutic effect of improving the hardness of erection. In addition, patients can be regulated through traditional Chinese medicine, such as liver-sparing and yi yang capsule and so on.