Erectile dysfunction (erectile dvsfunction, ED) is defined as the persistent inability of the penis to achieve and maintain an erection sufficient for satisfactory sexual intercourse in the past 3 months; ED is one of the most common sexual dysfunctions in men. Although ED is not a life-threatening disease, it is closely related to the patient’s quality of life, sexual partnership, and family stability, and is an early warning sign of many somatic diseases. The treatment of ED should be based on the principles of effectiveness, safety, and convenience, so that sexual life can be carried out in a natural state without interference. According to the consensus reached by experts around the world, the options for ED treatment include.