There are many indicators in urine routine, commonly used indicators: i. PH value of urine is normal, ranging from 4.5-8, which can reflect the change of pH of urine. Second, the nitrite of urine, a qualitative indicator is negative when normal and positive when abnormal. Third, the number of white blood cells and red blood cells in the urine, reflecting the presence of infection or bleeding in the urine, is detected as negative under normal conditions and positive in abnormal conditions. Fourth, urine bilirubin and urobilinogen, reflecting the metabolic excretion of bilirubin in the body. It is negative under normal conditions and positive under abnormal conditions. Fifth, the normal value of the specific gravity of urine is between 1.010 and 1.030. With the external ambient temperature, water consumption, or changes in the solute of urine, etc., have a certain impact. Sixth, urine sugar, reflecting the metabolism of blood sugar. If the blood glucose is too high beyond the threshold of kidney metabolism, it can appear that urine sugar is positive, and under normal circumstances is negative. There are also ketone bodies, which are negative under normal conditions, positive in starvation or when there is ketoacidosis.