The causes of yellow urine are divided into physiological and pathological causes. In the pathological state of the human body if there is a urinary tract infection, urinary tract stones and other conditions, will affect the composition of urine, resulting in yellow urine, you can go to the hospital to do urine routine, urinary system ultrasound and other tests, you can clarify the cause of yellow urine. Liver and gallbladder diseases or blood system diseases may lead to an increase in urobilinogen in the urine, which can also lead to the overall yellow color of urine, you can go to the hospital to check the liver function, urinary routine and other tests to help clarify. Physiological reasons are first considered to drink less water, sweating and other factors, less fluid in the body, the urine is concentrated into a yellow color. Secondly, after taking food or drugs, such as taking vitamin B and eating carrots, it is also easy to cause yellow urine color, and does not cause other clinical symptoms, stop taking drugs and related foods after the urine color can return to normal.