The urine color is more yellow and the smell is heavier, the possible reasons are as follows: 1, urine storage for a long time leads to excessive concentration of urine, such as the external temperature is higher, drink less water or nausea, vomiting, diarrhea, etc., too much water loss in the body, insufficient supplemental water, it will cause the concentration of urine, the color of the urine discharged will be yellow, dark, and smell heavy. 2, there are various obstructive lesions of the urethra, such as The urine will be darker in color and smell heavier when stored in the bladder for a longer period of time. 3, if there is a urinary tract infection, there can also be a deepening of the urine color and smell, except for the appearance of the urine color is darker, but also visible cloudy urine, accompanied by frequent urination, urinary urgency, urination Pain, etc., further laboratory tests of urine are needed.