In our daily life, we often hear that lumbago, weakness, weak legs and feet, intercourse can not be “kidney deficiency”, you have to eat “six flavor Dihuangwan” Chinese medicine to kidney; also heard of chronic nephritis, uremia, etc. is “kidney disease “. So “kidney deficiency” and “kidney disease” in the “kidney” is the same thing? The kidney in “kidney deficiency” refers to the “kidney” in the five internal organs of Chinese medicine, while the kidney in “kidney disease” is the kidney in Western medicine according to the anatomy and physiology of the human body and the disease. The “kidney” in “kidney disease” is the “kidney” defined by Western medicine according to human anatomy and physiology and pathology, which are not exactly the same. The anatomical position of the kidney and the physiological view that “kidney is a urinary organ with endocrine function” described by Western medicine are different from the Chinese medicine view that “kidney is the master of water”, “kidney is the master of bone and marrow”, and “kidney collects essence and essence produces marrow”. The view that “the kidney collects essence and essence produces blood” is basically consistent. The difference is that many functions of the kidney in Chinese medicine are beyond the scope of kidney functions in Western medicine.