In men, the urgency to urinate in the morning is mainly due to the habit of drinking too much water before going to bed, which leads to the presence of more urine in the bladder during the awakening phase and triggers a strong degree of urination in the bladder. This nerve impulse is homologous with the male erectile nerve impulse, so it will trigger an erection at the same time. Usually this condition is caused when the bladder is empty after the man goes to the bathroom to urinate in time, the excitatory state will decline, so there will also be localized weakness of the penis on its own, and after the weakness, the body will not have any discomfort symptoms, which is caused by normal physiological regulation. Therefore, when the human body has excessive bladder urine urgency, even if there is an erection of the penis, it does not belong to the pathological state, the patient does not need to worry about special. Unless the problem is caused by persistent penis weakness after urination, you should go to the hospital for a clear examination to exclude the disease of abnormal penile erection.