oliguria after polyuria

More urine followed by less urine. Normal adult urine is 46 times during the day nocturnal 02 times, urine volume generally 1000~2000ml. Urine often refers to increased urine volume, if urine volume is greater than 2500ml, called polyuria. If urine volume is not much, urine frequency increases, called frequent micturition. Urine volume less than 300ml, called oliguria. If urine volume is less than 100ml, called anuria. After oliguria, usually caused by kidney disease. Traditional Chinese medicine believes that it is related to kidney deficiency. In the early stage, kidney qi is not solid, resulting in polyuria. In the later stage, kidney yang deficiency and kidney qi are not transformed, resulting in oliguria.