The appearance of foam in urine is usually normal and usually disappears within a few minutes, depending on the individual. There are many reasons for the appearance of foam in urine, which need to be analyzed according to the actual situation. Under normal circumstances, urine contains a large amount of organic and inorganic substances, which tend to produce foam after discharge and usually disappear within a few minutes. In addition, when there is semen or prostate fluid mixed in the urine, it can also lead to an increase in foam that does not dissipate easily, but it is a normal phenomenon and does not require much concern. In addition, pathological factors such as inflammation of the urinary tract, gynecological inflammation, diabetes, etc., can also lead to foam in the urine, and the foam does not dissipate easily, and is accompanied by clinical symptoms of the corresponding systemic lesions, such as abdominal pain, frequent urination, urgent urination, painful urination, abnormal leucorrhea, vaginal itching, etc., which need to be diagnosed in time through the corresponding examination. If you often have urine foam that does not disappear for a long time, it is recommended to go to a hospital urology department as soon as possible.