In normal people, newly excreted urine is mostly clear, light yellow or yellow. If the urine is particularly yellow in color, you need to identify whether it is a physiological or pathological cause, and do an examination to clarify and then provide targeted treatment. The more common cause is concentrated urine. This is a normal physiological phenomenon caused by bad habits such as sitting and holding urine and drinking too little water. The concentration of inorganic salts in the urine increases, leading to yellow urine. In this case, we should pay attention to drinking more water and avoid bad habits such as sedentary, holding urine and staying up late. Diet can cause yellow urine, such as eating some food that can easily cause the urine to turn yellow, like vitamin c after taking, its metabolites will be discharged with the urine to show yellow urine, usually after a day or two after taking the drug will return to normal. Urinary tract infections can also cause yellow urine, which sometimes also manifests as cloudy urine with purulent secretions, requiring timely standardized anti-infection treatment under the guidance of a urologist. The fourth condition also needs to be considered a disease of the digestive system, such as jaundice caused by yellowing of the urine, this condition will generally have a yellowing of the sclera or skin, do liver function tests will have a significant increase in bilirubin, need to go to the gastroenterology department, further examination to clarify the cause, and then targeted treatment. In conclusion, there are many possibilities for yellow urine, which can be a physiological manifestation caused by bad habits, or a pathological manifestation caused by factors such as urinary tract infections. It is important to pay attention to the cause and deal with it in a timely manner to avoid delaying the condition.