A single urine output of about 150ml is normal. Generally speaking, the urine volume of 100-300 ml per time in adults belongs to the normal value range. Normal people in the process of bladder filling the intravesical pressure rises very slowly, usually in about 10cmH2O, the maximum does not exceed 15cmH2O. when the bladder capacity reaches 150-250ml, the patient can appear the initial desire to urinate. It should be noted that, clinically, the 24-hour urine volume is generally used to determine the amount of urine, if the 24-hour urine volume is more than 2500ml is called polyuria; 24-hour urine volume is less than 400ml is called oliguria; 24-hour urine volume is less than 100ml is called anuria. It is recommended to go to the hospital in time when there is an abnormal urine output, to further improve the 24-hour urine output, urine routine and other tests, to clarify the diagnosis, and follow the doctor’s instructions to standardize the treatment.