You can regulate penis hardness and erection time through diet, exercise therapy, medication and so on. 1. Diet: You can regulate penis hardness and erection time through diet, supplement high quality protein, such as beef, mutton, oysters, etc. You can also eat vegetables, such as leeks, celery, etc. Diet is not the same as medicine, according to their own situation to choose. 2. Exercise therapy: men can improve blood circulation in the perineal area, improve sphincter function, and have a certain supportive effect on erection, which can enhance physical fitness and increase the hardness and time of penile erection by lifting the anus, running and playing basketball. 3. medication: commonly used drugs to regulate penile hardness and erection time are sildenafil citrate tablets, tadalafil tablets, etc., which have the effect of vasodilatation, and through the expansion of the cavernous body in the penis, to achieve prolonging the time of erection and increasing the erection hardness, and dizziness and facial flushing may occur in the process of using it, and it is forbidden to use it for patients who are allergic to this product or have heart failure. The conditioning of penile hardness and erection time should be carried out under the formal guidance of a doctor, according to their own situation, choose the right way for themselves.