Bladder distension and desire to urinate in women belongs to urinary frequency. Its causes include physiological and pathological. Pathological female urinary frequency is mostly caused by urinary tract infections and other urinary tract diseases. 1. Physiological: normal adults urinate more than 4-6 times during the day and more than 0-2 times at night is called urinary frequency. Physiological increase in the number of urination can be seen in too much water, nervousness, cold climate. Characterized by a lot of urine each time, and not accompanied by other symptoms such as urinary pain, urinary urgency. 2. Pathologic: (1) polyuric urinary frequency such as diabetes mellitus, uremia, etc., such increased urination and each time the amount of urine is not less. (2) Inflammatory urinary frequency such as cystitis, urethritis, etc., such frequent urination and each time the amount of urine is small, accompanied by urinary urgency and urinary pain. (3) Neurogenic urinary frequency, such as hysteria, neurogenic bladder, this kind of urinary frequency and each time the volume of urine is small, not accompanied by urinary urgency and urinary pain. (4) Reduced bladder capacity urinary frequency, such as pregnancy, uterine enlargement compression of the bladder, etc.; urethral peripheral lesions such as urethral polyps, etc.. Frequent urination, such as the exclusion of physiological reasons, should be timely to the regular hospital, the doctor to clarify the cause of the disease, do targeted treatment.