Urine yellow urine odor may be concentrated urine, cystitis, liver disease and other factors. 1. Concentration of urine: when drinking too little water for a long time, it may cause excessive loss of body fluids, the production of urine is reduced, resulting in a concentrated state of urine, resulting in yellow urine odor. 2. Cystitis: If you don’t pay attention to physical hygiene, it may lead to cystitis, causing the presence of a variety of substances in the urine, the phenomenon of yellow urine with a strange odor, accompanied by pain in urination, urinary frequency and other symptoms. 3. Liver disease: when the patient suffers from alcoholic hepatitis, viral hepatitis and other diseases, are prone to the presence of bilirubin in the urine, resulting in yellow urine odor symptoms. There may be other reasons for the yellow urine odor, you should go to the hospital in time for the appropriate examination, follow the doctor’s instructions for treatment.