The possible reasons for the yellow color of the urine excreted are: 1, urine concentration, long time without urination, urine in the bladder for more than four hours or hot weather, more water evaporation but less water replenishment, can appear the situation of urine concentration, urine can be seen when urinating yellow color, generally no urination pain, urinary frequency, urinary urgency and other symptoms, you need to drink more water appropriately, after replenishing water to observe whether the color of urination back to normal 2, consumption of vitamin drugs, may lead to yellow urine, a large number of sulfonamide antibiotics can also cause yellow urine, it is recommended to stop the intake of related drugs to observe whether the urine color yellow; 3, yellow urine, stay urine routine can be seen in large amounts of bilirubin, then there may be jaundice disease, the liver or biliary tract obstructive disease and cause a significant increase in bilirubin levels, combined with bilirubin dissolved in water through If the bilirubin is dissolved in water and excreted by the kidneys, the urine may be yellowish in color, and blood bilirubin levels and liver and gallbladder tests are needed to determine whether the patient has obstructive jaundice.