Patients urine is always yellow, to be combined with the relevant symptoms for comprehensive consideration, as follows: 1, physiological factors: there is no pathological factors, such as drinking less water, hot weather, a lot of sweating, may lead to yellow urine. In addition, taking certain drugs, such as vitamin B complexes, may lead to yellow urine, which is due to physiological factors. Because the urine is concentrated, the urine will have urea, will appear yellow, especially when the water deficiency, the yellow will be more intense, at this time, drink more water and stop using the corresponding drugs, the yellow urine will turn clear. 2, pathological factors: such as liver disease, because of jaundice bilirubin elevated urine yellow, serious people will show soy sauce-like color, and urinary system infection, inflammation and other factors, often combined with frequent urination, urinary urgency and other Symptoms, too, can make the urine yellow. For the above factors, self-examination can be carried out, but most importantly, further detailed examination is recommended to clarify the cause.