The long time urine yellow need to go to the hospital for relevant examination, clear cause after how to deal with.1, if it is caused by the concentration of urine, it is recommended to appropriately increase the amount of drinking water. On the basis of the original water intake, increase the daily water intake by about 500ml, and observe whether the color of urine can be changed to light yellow or bright color.2. If there are elevated levels of bilirubin and urobilinogen in the urine, it is necessary to further check whether there is hepatocellular jaundice or obstructive jaundice caused by biliary obstruction, and it is necessary to ask the gastroenterology department to carry out specialized treatment. After the bilirubin level decreases and returns to normal, the yellowing of urine can be improved.3. If there is urinary tract infection, it is recommended to take 1 capsule of levofloxacin hydrochloride orally 3 times a day for one week after the diagnosis is confirmed. Oral sodium bicarbonate tablets 1 tablet, 3 times / day oral one week to observe the yellow urine can be improved.