Yellow urine and foam are two relative clinical symptoms, as follows: 1. Yellow urine: when the urine is darker and more yellow, it suggests that the urine is more concentrated, such as when the patient drinks less water, in the summer in a hot environment, sweating is relatively large, and when the amount of water is relatively insufficient, the urine may be more concentrated. There is also the morning urine, also relatively heavier than the daytime urine color, will be more yellow, at this time for the urine concentration, urine specific gravity can sometimes be greater than 1.030, which can only indicate that the urine concentration, if you are worried about other situations, you need to go to the hospital to check the urinary routine. 2, bubble urine: there are two kinds of bubble urine, one is the tension of the foam, especially seen in men, the process of urination can appear a large number of The bubbles can appear during the process of urination, but after the completion of urination, the bubbles will burst on their own. This is called tonic foam and is caused by physiological reasons. The other kind of foam is small and does not dissipate for a long time, and the foam does not dissipate even after urination, which often indicates proteinuria. You need to go to the hospital for a routine urine test to see if there is urine protein. So, whether you have yellow urine or foamy urine, you need to go to the hospital for the appropriate tests when determining what it is caused by.