The incidence of male erectile dysfunction is very high, accounting for about 15-20% of the outpatient volume of urology male department in our hospital. Foreign data show that more than 50% of men aged 40-70 years old have sexual dysfunction, one third of which is moderate to severe. The causes of sexual dysfunction are complex, cardiovascular, vascular, endocrine and so on, only a systematic examination can choose the appropriate treatment program. Therefore, once you find that you have a bad erection, please go to a regular hospital in time. The examination mainly includes erection quality score, sex hormone measurement, nocturnal erection test, drug erection test, penile cavernous Doppler ultrasound, pubic nerve somatosensory evoked potentials, bulbocavernosus muscle reflexes and threshold measurement, etc., and only with systematic examination can we determine the cause of the disease and carry out effective treatment. Here to remind all patients, if you suffer from this disease, do not blindly medical or private to the drugstore to buy drugs, this is likely to be a waste of money and can not cure the disease, and even have side effects. There is no need to worry too much about erectile dysfunction, there are ways to treat it.