Normal people urine is light yellow, urine yellow reasons are the following: 1, drink less water: most people do not love water, drink less water, causing fire. 2, disease: certain diseases can also cause yellow urine, such as acute fever, and that is to say, vomiting and diarrhea patients, because a large amount of water with sweat or feces out of the body, will make the urine concentrated yellow. It is recommended that if you find yellow urine, you must drink more water, eat a light diet, avoid spicy and stimulating foods, avoid cold and greasy foods, and prohibit smoking and drinking. If you do the above or if the urine is yellow or smells very bad, consider having a bacterial infection and suggest going to the hospital for a routine urine test at the first opportunity.