Foamy urine generally disappear within five minutes is a normal phenomenon, if the foamy urine more than ten minutes or even half an hour does not disappear, indicating that the surface tension of the urine increases, indicating that the body may have an abnormality, the specific analysis is as follows. Foam urine is generally a normal phenomenon, the human body’s urine in addition to water, but also contains urea, ammonia, uric acid and other inorganic salts, these substances will make the urine surface tension, resulting in foam urine, but generally within a short period of time to dissipate is a normal phenomenon. Foamy urine does not dissipate for a long time, this situation suggests that the surface tension of the urine increases, indicating that there may be protein, glucose, etc. in the urine, the patient may be suffering from nephritis or diabetes mellitus, which leads to urine foam for a long time does not dissipate. If the foam in the urine does not disappear for a long time, it is best to go to the hospital to check whether the composition of the urine is normal, as soon as possible to clarify the cause of the disease, under the guidance of the doctor to avoid delaying the condition.