Foam in urine indicates that the patient may have proteinuria or increased urinary glucose, and the possible diseases include acute and chronic kidney diseases, such as acute glomerulonephritis, chronic glomerulonephritis, acute interstitial nephritis, chronic interstitial nephritis, diabetic nephropathy, lupus nephritis, and hepatitis B-related nephropathy. Therefore, if you find increased foam in the urine, it is recommended to consult the hospital, you can first improve the urine routine examination to see whether there is proteinuria, if the urine protein is indeed positive, and then start further examination, such as 24hUP quantification, blood routine, blood biochemistry, urinary tract ultrasound, etc., in order to diagnose the disease clearly, and then give positive and reasonable treatment.