The fresh urine discharged normally is light yellow, because there is a yellow urine pigment in the urine However, the color of urine can vary from dark to light depending on the amount of water you drink. Drink more water and urinate more. The proportion of urine pigment in urine is small, and the color is light; Drink less water, the proportion of urinary pigment in urine is large, and the color appears yellow. The color of urine is related to many factors: a small amount of water will make urine yellow. 2. If you are tired, have a bad rest, or eat some spicy and greasy food that is easy to get angry, your urine will also turn yellow. 3. Abnormal liver and kidney functions. IV Taking some drugs may cause yellowing of urine, such as vitamin B. 5. Urinary system inflammation. Urine may also turn yellow, but most of them are accompanied by symptoms of urinary tract irritation.