If the erectile nerve is damaged, such as pelvic fractures or perineal injuries, trauma, etc., can lead to loss of erectile nerve function, resulting in the inability to get an erection, and there is usually a clear cause for the injury. 2. 3, vascular lesions such as a series of lesions in the penile blood vessels, long-term diabetes can cause atresia of the peripheral vessels, or cause increased vascular permeability, which can cause insufficient blood perfusion in the penis, resulting in erectile abnormalities or completely unable to erect the situation, need to go to the hospital A series of tests will be performed to confirm the final cause.