Why is urine frequency much urine quantity little

The number of urination during the day should be 4-6 times, the number of urination at night should be normal 0-2 times, urination more than 6 times during the day or more than 2 times at night is considered frequent urination. Frequent micturition can be physiological or pathological. If the amount of urine discharged each time is still relatively small, it is not considered to be caused by physiology. It can be caused by urinary tract infection, such as urinary tract stimulation symptoms of frequent micturition, urgency and pain, as well as whether there is possibility of urinary outlet occlusion. Urine examination, urine routine examination and urodynamic examination should be carried out.