The possible reasons for the foam in men’s urination: 1. When the urine is concentrated, there can be more foam, accompanied by yellow urine, the foam is larger and can dissipate quickly, and the foam can disappear after drinking more water appropriately. 2. 3, if there is kidney disease may cause high protein content in the urine, can cause increased foam in the urine, the foam is mostly small and long-lasting and does not dissipate, at the same time can be accompanied by edema of the limbs, face and other parts of the urine or reduce the volume of change, need to carry out kidney function tests, urine protein quantitative tests to further confirm the diagnosis. 4, if there is a urinary tract infection can also be If you have a urinary tract infection, you may have frothy urine, yellow urine, frequent urination, urgent urination, painful urination and other urinary tract irritation symptoms, and you need to undergo urine routine and urine culture tests to further confirm the diagnosis.