Impotence is erectile dysfunction, there is no pre-existing reaction to the condition, and the diagnosis is basically confirmed when the patient experiences symptoms such as slow erection or insufficient hardness after erection. Erectile dysfunction is one of the most common sexual dysfunctions in men’s clinics, and it occurs in adult men. Clinical symptoms include slow erection, insufficient erection hardness, and difficulty in erection, which makes it impossible for the man’s penis to enter the woman’s vagina smoothly, or weakness after entering the guide due to insufficient erection hardness. There are no obvious signs or premonitory reactions to the condition, and patients may only experience slow erections when the condition is mild, but the diagnosis is basically confirmed at this point. The causes of erectile dysfunction are more complex, the more common clinical causes include the patient’s husband and wife do not have a harmonious sex life, there are bad sexual experiences, life stress and other psychological factors. At the same time, if the patient has atherosclerosis and other vascular diseases, stroke and other neurological diseases, penile diseases such as the penis itself, or other such as lumbar spine trauma, high blood pressure and other underlying diseases, may also cause the disease. To summarize, impotence has no obvious pre-reaction, if the patient has recently found symptoms such as slow erection or difficulty in erection, it is recommended to consult a doctor for examination in time.