Nocturnal painful erection is not necessarily sympathetic nerve excitement, but may also be related to genital inflammation, emotions and psychological factors. In addition to sympathetic nerves, painful nocturnal erections may also be caused by other factors, such as prostatitis, prostate hyperplasia, enlarged prostate, seminal vesiculitis, etc., stimulated by inflammation can easily lead to abnormal erection of the sexual organs, and there is a painful sensation, so the painful nocturnal erection is not necessarily sympathetic nervous excitement. If it is sympathetic nerve excitation that causes nocturnal painful erection, the patient will also have emotional excitement, abnormal irritability, poor quality of sleep at night, insomnia, panic attacks and other symptoms, these factors may make the dorsal nerves of the penis over-excitement, resulting in abnormal penile erection. Abnormal penile erection with pain at night may also be caused by other factors, we need to go to the regular hospital in a timely manner to seek medical treatment, and through physical screening, blood tests, penile cavernous blood gas analysis to understand the cause of the disease, and then combined with the results of the diagnosis of targeted treatment, and strive for early recovery.