Increased foam in the urine then possible causes: First, if the urine contains more protein, there can be increased foam. This is in addition to the increased foam in urine, may also be accompanied by swelling of the face and limbs, etc.. Mostly considered to be due to kidney disease, need to carry out the relevant tests of kidney function and urine protein quantitative examination for further determination. Secondly, when there is more sugar in the urine, such as patients with diabetes or eating a lot of sweets, the phenomenon of increased foam in the urine can occur. Urine sugar measurement or blood sugar measurement is needed to further identify. Thirdly, when there is a urinary tract infection, the urine contains more trace proteins and bacteria, which can appear increased foam. It is usually accompanied by yellowish color with frequent and urgent urination and other discomforts, and the number of white blood cells and bacteria can be significantly increased by routine urine examination. Fourth, when the urine is extremely concentrated, there can also be an increase in foam. The urine is yellowish in color and the foam is large and can dissipate quickly, usually without any urinary tract irritation symptoms, and the rest of the items are normal with a slightly higher specific gravity in the routine urine examination.