According to Chinese medicine, the kidney is the root of the innate nature, which has the function of collecting essence, collecting qi, mastering bone and producing marrow, and is an important organ for excreting end metabolic wastes of the body and maintaining the acid-base balance of water and electrolytes and the stability of the internal environment. For example, the human body is like a big tree, the kidneys are the roots of the tree, the roots of the tree can only flourish, so the health of the kidneys directly determines whether the human body is healthy or not. Why is it difficult to detect chronic kidney disease at an early stage? First of all, chronic kidney disease can have no symptoms at all or the symptoms are not obvious, which cannot attract enough attention from patients and their families. The compensatory function of kidney is extremely strong, even if the kidney function has lost more than 50% of chronic kidney disease patients may still have no symptoms. Second, many routine physical examinations or unit checkups often do not do kidney function tests, and thus it is easy to miss chronic kidney disease. Third, some doctors lack the awareness of routine urine and kidney function tests for patients, especially those at high risk. For patients with hypertension and diabetes mellitus who are first diagnosed, some doctors only treat them with antihypertensive drugs and hypoglycemic drugs, but fail to implement routine urine and kidney function tests in a timely manner. Fourthly, various methods of checking kidney function have certain limitations and lack early sensitive indicators, which cannot diagnose chronic kidney disease earlier. In addition, the popularization of kidney disease in China is relatively weak, and the general public cannot fully understand the knowledge of kidney disease prevention in time. Moreover, the problem of “difficulty in seeing a doctor” still exists, so it is not rare that some patients fail to seek timely medical treatment or are unwilling to actively seek medical treatment, which is also an important reason why chronic kidney disease is not easily detected at an early stage.