The official name of impotence should be male erectile dysfunction, which refers to an erection that is not hard enough for vaginal penetration when attempting sexual intercourse, or an erection that does not last long enough to complete a satisfactory sexual life. Male erection is a complex process involving brain, hormones, emotions, nerves, muscles and blood vessels, which may be related to one or more of the above mentioned causes, and can be classified as psychological erectile dysfunction and organic erectile dysfunction according to the cause; it can be classified as mild, moderate and severe according to the degree of severity, of which severe erectile dysfunction refers to the long-term persistent inability to complete satisfactory sexual life. It should be noted that male sexual dysfunction includes hypoactive sexual desire, erectile dysfunction, orgasmic and ejaculatory dysfunction, penile weakness dysfunction, etc. Among them, erectile dysfunction is the most common male sexual dysfunction, but the above diseases differ in etiology and treatment. Due to the privacy of the disease and the lack of professional knowledge of patients, patients often generalize all these conditions as impotence and go to superstitiously believe in the so-called tonics and prescriptions, delaying the condition. Therefore, impotence is the most common male sexual dysfunction and is related to many factors. Patients who have suspicions in this regard should better seek medical consultation with a specialist to avoid misdiagnosis and omission.