The urine of uremia patients is usually yellow in color, although it is usually lighter than normal urine. Uremia due to the loss of basic kidney functions, resulting in decreased drainage and detoxification ability of the kidneys, will cause oliguria, or even anuria symptoms; weakened detoxification function of the kidneys, will lead to a decrease in the amount of metabolites and toxins contained in the urine, which in turn causes the urine to become lighter in color. Some patients with uremia do not have a significant decrease in urine volume, this part of the patient although the glomerular filtration rate decreased, but due to the decrease in tubular reabsorption function, so the volume of urine will not be significantly reduced, and at the same time due to the metabolic wastes in the urine is relatively small, resulting in a light yellow color of the urine. It is recommended that patients with uremia, go to the hospital in time, under the guidance of the doctor active treatment or renal replacement therapy, to avoid the progression of the disease.