Possible causes of yellow urine and odor: 1. Urine that is excessively concentrated or urine that has been retained for too long can have a deepened color. If you have not urinated for a long time, the urine stays in the bladder for at least more than four hours. Appear to have less water, more sweating, nausea, vomiting, diarrhea, etc., resulting in excessive loss of body fluids, can appear yellow urine color with a greater odor. You need to drink more water and urinate in time, do not hold urine. 2, when the occurrence of urinary tract infection, can appear yellow urine color. Because the urine contains more bacterial metabolites and more pus, there can be a heavy odor of urine. Also mostly accompanied by abnormal urination, can appear urinary frequency, urinary urgency and other urinary tract irritation symptoms, need to carry out routine urine examination to further confirm the diagnosis. 3, when the diet consumes special smelling food or fruit, can also cause yellow urine with odor. Such as the consumption of onions, garlic, durian, etc., can appear yellow urine and odor aggravated.