A man’s excessive urination at night may be caused by excessive water intake, prostate tissue enlargement, and inflammatory reactions in the urinary tract. 1.Excessive drinking. If you drink too much water before going to bed, it will lead to frequent urination at night, which will also affect normal sleep, and this phenomenon can be improved by reasonably adjusting your eating habits. 2. Prostate hyperplasia or prostatitis. If a man has prostate hyperplasia, the gland extends into the bladder cavity, stimulating the bladder triangle to increase the frequency of urination. Prostatitis may also occur with increased nocturia, accompanied by frequent urination, urinary urgency, urinary dribbling and other symptoms. 3. Inflammation of the urinary tract. If we do not pay attention to personal hygiene for a long time, it will directly lead to the overgrowth of local bacteria, resulting in some inflammation of the urinary tract, and also the symptoms of frequent urination, urinary urgency as well as painful urination. If the phenomenon of frequent urination at night, affecting the normal work life, it is recommended to go to the regular hospital urology department for a detailed examination, to clarify the cause of the disease after treatment.