The fresh urine discharged by normal people is light yellow because it contains yellow urine pigment, when the urine color is lemon yellow, there may be several reasons: 1, when the body intake of water is reduced or a lot of sweating, urine concentration, urine pigment content accounted for a large color will deepen, may be lemon yellow, with a gradual increase in water content, supplemented with sufficient water, urine color can gradually return to normal. 2, the body The body will consume a lot of water when it is unwell and on fire, resulting in a lack of water and concentrated urine. 3, when consuming a lot of yellow-dyed food or taking too many related drugs, the metabolic waste is excreted through the urinary tract, which will also lead to a deepening of the urine color, lemon yellow. 4, if the urine is placed, some substances in the urine are oxidized, the urine pigment content increases, and the urine color will also deepen to lemon yellow.