The normal adult male penis erection time is not hard and very short, it is likely to consider impotence caused by the appearance. There are many reasons for impotence, such as prolonged masturbation, circumcision, smoking, drinking, staying up late, studying, and stressful work. However, the most fundamental cause of erectile dysfunction is the lack of blood filling in the cavernous body of the penis. It is advisable to go to the hospital to do a penile corpus cavernosum filling test, which can make a clear diagnosis. If necessary, you can use drugs for treatment, the more commonly used drugs in the clinic are, sildenafil tablets and Wuzi Yan Zong pill, the effect is better. For normal treatment, you can take sildenafil tablets orally half an hour in advance, which can maintain the erection of the penis for half an hour to an hour, and can complete a normal sexual life.