Foam in the urine is not always an abnormal phenomenon, foam may also appear in the urine of normal people, need to be analyzed in conjunction with the specific circumstances. Human urine contains many inorganic and organic components, due to the different tensions of the various components, after flushing may form foam. In general, if the body is healthy, there is no combination of other abnormal symptoms, and the urine composition index as well as other indicators do not show any abnormality, there is no need to deal with it. However, if the patient has swelling and pain in the lower back, difficulty in urination, or abnormalities such as proteinuria or hematuria in the urine, the clinic may suspect glomerulonephritis, tubulonephritis, immune nephritis and other diseases. Diabetes may be suspected if there is excessive drinking, excessive eating, excessive urination and weight loss. Foamy urine is not necessarily an abnormal symptom, if the combination of symptoms should be timely consultation with the urology department, to identify different diseases and take appropriate treatment.