How small foam is not likely to be urine protein, because urine protein can not be seen with the naked eye, and the presence of foam in the urine may be due to proteinuria and drink too much beer, or even due to gas urine will lead to increased foam. In the normal adult male will also appear in the urine foam, most of the normal phenomenon, the patient can go to the urology clinic, check the urine routine, urine routine in the urine protein test project, normal urine will contain a small amount of small molecules of protein, if the increase of protein in the urine is proteinuria, need to be further examined to rule out kidney disease. And simply from the amount of foam in the urine and whether there are large and small foam is not able to determine whether there is urine protein. There are many reasons for proteinuria, such as functional proteinuria or pathologic proteinuria, so you need to go to the nephrology department to get a clear picture of the cause of the disease and then treat the symptoms.