Most frequent urination before bedtime is caused by mental factors, also known as psychogenic frequency of urination. Many people worry that they will have a lot of urine after going to bed and appear to wake up at night holding urine, which is an underlying concern. It is recommended to urinate once before bedtime and then go to sleep without worry. The human bladder can have a capacity of 300-500ml and can go through the night without going to the toilet. If you have the phenomenon of frequent urination before bed, you must divert your attention, relax properly, wash your feet with hot water before bed so that you can fall asleep quickly, and also avoid the bad habit of going to the toilet non-stop before bed.