Normal fresh urine contains pigments such as urobilin and bilirubin and is pale yellow to dark yellow, clear and transparent, with a certain odor. Urine color and odor can also be affected by food, urine pigments, medications, etc. The urine is yellow and cloudy, and the smell is great, often may be seen in low water consumption, and may also be related to urinary tract infections or jaundice. 1, low water consumption: low water consumption is followed by the formation of less urine, which is in a concentrated state. The body’s normal diet metabolism forms a large number of organic salts and inorganic salts and other products, these metabolic products are deposited in the urine, due to the reduction in urine volume, the urine will appear in a concentrated state, making the urine yellow and cloudy, the urine volatile acid increases, so that the urine produces a foul smell; 2, urinary tract infections: pathogenic microorganisms may lead to urinary tract infections, such as urethritis, cystitis, prostatitis, etc.. Among them, Staphylococcus aureus infection will appear yellow urine with flocculent, gonorrhea infection can appear yellow pus urine, all can appear yellow and cloudy urine, the symptoms of a great smell. Usually urinary tract infections are accompanied by frequent urination, painful urination and other symptoms, which can be clearly diagnosed through routine urination, ultrasound, etc., and treated for the cause; 3, jaundice: jaundice can also make the urine yellow and cloudy, with a serious odor, usually due to liver and gallbladder dysfunction, often accompanied by yellow sclera, itchy yellow skin and other symptoms, and in severe cases, abdominal pain, fever and other symptoms, requiring timely treatment.