The kidneys are silent, not moaning, no symptoms, symptoms are not obvious, is the “silent disease” “invisible killer”, so for this silent disease, in addition to modern testing methods, usually life observation is also vital, this issue we will give you This issue we will introduce to you, through the urine observation to “look at the urine to know the disease”. We know that urine contains various nitrogenous wastes and minerals, and normal fresh urine is a transparent, yellowish liquid, while the color varies with the amount of water drunk by the individual, but what is the matter with foam in urine? In fact, the formation of foam in urine is mainly related to the surface tension of the urine liquid, the higher the surface tension of the liquid, the easier it is to form foam. In various cases, the various components of urine change, such as protein, mucus and organic substances increase, it can make the surface tension of the urine increase, easy to appear foam. Foamy urine is not exactly a disease. If the foam is large or of different sizes and lasts for a short period of time, it is a normal bubble that rushes up because of the high tension of the urine. For example, men are more likely to have foam when they stand to urinate; they are more likely to have foam when they drink less water and have a higher concentration of urine; and they are more likely to have foam when they urinate for the first time in the morning. Therefore, it can be normal to have foam in urine. The foam in urine is related to many factors such as diet structure, age, water and alcohol consumption. So what exactly is the difference between normal foamy urine and abnormal foamy urine? If foamy urine appears continuously, especially if there is a layer of fine, persistent foam that does not easily disperse on the surface of the urine, especially if it is accompanied by other abnormal symptoms such as swelling, hematuria, frequent urination, urgency, painful urination, increased nocturia, or if it is accompanied by hypertension, diabetes and other diseases, it should be taken seriously. So what are the causes of froth in urine? Abnormally elevated protein levels in the urine are one of the most common causes of foamy urine. Proteinuria occurs when the glomerular filtration barrier is damaged, or when there is too much low molecular protein in the plasma and the protein enters the urine and exceeds the reabsorption capacity of the renal tubules. In addition, proteinuria can also occur when the epithelial cells of the proximal tubule are damaged and the reabsorption capacity is reduced or lost. When the qualitative test for urine protein is positive or the quantitative test is greater than 150 mg/24h, it is called proteinuria. And proteinuria is divided into physiological proteinuria and pathological proteinuria 1. Physiological proteinuria: caused by factors such as strenuous exercise, fever, cold or high temperature, which lasts for a short time and disappears after the trigger is removed. Women during pregnancy may also have mild proteinuria. This condition should be reviewed and monitored regularly. 2, pathological proteinuria: If the urine protein is positive or quantitative exceeds the standard after repeated reexamination, it indicates persistent proteinuria, i.e. pathological proteinuria, which should be paid great attention to, the specific cause of proteinuria is very complicated, and it needs to be seen by a nephrology specialist as soon as possible. From the perspective of Chinese medicine, foamy urine belongs to the category of “wind” and “qi”. The spleen is deficient and the qi does not take in the essence, which can lead to proteinuria due to the discharge of essence from the urine, or the kidney is deficient in qi, which can also lead to proteinuria. Proteinuria is mostly related to the evil of dampness and heat, and Master Gao often says that “if dampness and heat are not removed, protein is difficult to be eliminated” and “a long illness will lead to deficiency, and a long illness will lead to stasis”, so in the treatment, besides tonifying the spleen and kidneys, Master Gao likes to use coix seed, gold cherry, white fungus root, ghost arrow feather, etc. to clear heat and remove dampness and turbidity. In addition to tonifying the spleen and kidneys, Gao likes to use leeches, silkworm and cicada to improve microcirculation and eliminate urinary protein, with remarkable clinical effects. However, Chinese medicine is characterized by dialectical treatment, depending on the manifestations of the symptoms, the treatment must be administered according to the symptoms.