Male penile sustained congestion is good or bad, depending on the duration, normal adult males can maintain penile erection for several minutes or even more than 1 hour under sexual intercourse or persistent stimulation. If the penis continues to be erected for more than 4 hours in a state other than the above, it is called abnormal penile erection. Abnormal penile erection can affect the body and needs to be treated actively. When abnormal erection of the penis, the continuous congestion of the penis may cause prostatitis, erectile dysfunction, damage to the corpus cavernosum and other hazards. 1. Prostatitis: men with persistent penile congestion have the possibility of causing prostatitis, which manifests itself in perineal pain, urinary frequency, urgency, urinary pain and other urinary abnormalities, sexual dysfunction, fever and other symptoms. 2. Erectile dysfunction: it may be due to the continuous congestion of the male penis, which may lead to cavernous fibrosis, and then cause erectile dysfunction, at the same time, low-blood-flow type of abnormal penile erection if it lasts for several hours will also be painful due to tissue ischemia. 3. Damage to the corpus cavernosum: If an abnormal erection is not treated effectively, it may lead to thrombosis in the corpus cavernosum, complicating corpus cavernosum fibrosis, and if the general treatment is ineffective, treatment such as implantation of a prosthesis is also needed. If you have an abnormal erection, please consult a doctor promptly.