The normal 24-hour urine volume for adults is generally in the range of 1500ml-2000ml, and some say that the normal 24-hour urine volume for adults is in the range of 1500ml-2500ml, and the overall volume of about 2000ml is considered relatively normal. Of course, in winter due to less sweating, the urine volume may be a little more, and in summer sweating more urine volume a little less, the overall difference will not be about 500ml. If the urine volume exceeds 2500ml in 24 hours, it is polyuria; if the urine volume is less than 400ml in 24 hours, it is oliguria; if it is less than 100ml, it is anuria, and it is kidney failure, so we should pay attention to the distinction.