If you drink a lot of water, more than 3,000 ml per day, but still have yellowish urine, it is very likely that there is a pathologic phenomenon that leads to the emergence of the phenomenon. For example, urinary tract infection, acute and chronic cystitis, pyelonephritis, glomerulonephritis and so on may lead to appear. It is recommended to go to the hospital to check the urine routine and ultrasound of the urinary system, which can make a clear diagnosis. If it is determined that it is a urinary tract infection, it is recommended to take oral medication for treatment, such as levofloxacin hydrochloride tablets and three gold tablets, the effect is better. The normal course of the disease takes 1-2 weeks, during the treatment period, it is best to eat a light diet, do not eat spicy stimulating food and cold food. And usually it is better to eat less vegetables and fruits, which can easily lead to the phenomenon of discolored urine.