Abnormal nocturnal erections are more likely to be organic erectile dysfunction, but not necessarily organic erectile dysfunction. Nocturnal penile erection is a normal physiological phenomenon, if the nocturnal erection is normal, then it means that the daytime erectile dysfunction is caused by mental, environmental and other factors, which is more likely to belong to the non-organic erectile dysfunction; if the nocturnal erection is abnormal, then it means that there may be penile organic lesions, which is more likely to belong to the organic erectile dysfunction. Of course, nocturnal penile erection is affected by men’s physical condition and age. If a man’s physical condition is poor, or if he is older, his nocturnal erections may be poorer, less frequent, or even absent, but this does not necessarily mean that he is suffering from organic erectile dysfunction, and further examination is needed to confirm the diagnosis. Men who have abnormal nocturnal erections should go to a regular hospital in time for examination and treatment under the guidance of a doctor.