Frequent urination can be seen in physiological factors such as drinking too much water and mental tension, and also in pathologic factors such as cystitis, neurogenic bladder, and bladder occupying lesions. 1. Physiological factors: such as drinking too much water, mental stress or cold climate, etc., the patient each time the amount of urine is not bad, and is not accompanied by urinary pain, urinary urgency and other symptoms, is a normal phenomenon. 2. Cystitis: Inflammatory urinary frequency, small amount of urine each time, mostly accompanied by urinary urgency, urinary pain and other symptoms, urine microscopy can be seen inflammatory cells. 3. Neurogenic bladder: neurogenic urinary frequency, not much urine each time, not accompanied by urinary urgency and other symptoms, urine microscopy without inflammatory cells, is a central and peripheral neuropathy. 4. Bladder occupational lesions: generally manifested as persistent frequent urination, difficult to relieve with medication, low urine volume, also seen in pregnancy uterine enlargement, bladder contracture caused by compression of the bladder. Frequent urination may also be caused by other factors, if there are symptoms of urinary discomfort, it is recommended that patients go to the regular hospital in a timely manner to seek treatment, and strive for early recovery.