"Kidney is the root of qi", "Syndrome Differentiation and Treatment" says: "Lung governs qi, and kidney is the root of qi. The lung governs qi and the kidney governs qi. " "Kidney is the root of qi" means that kidney is the root of qi in human body. From the original text of Analogy and Syndrome Treatment, "kidney is the root of qi" means "lung is the master of qi", and then it is said that "lung is the master of qi and kidney is the master of qi". It can be seen from the context that "kidney is the root of qi" emphasizes the role of kidney in respiratory movement. It can be seen that "kidney is the root of qi" and "kidney governs qi" are synonymous in different languages, that is, kidney is the root of qi, which has the functions of absorbing breathing qi, keeping breathing depth and preventing shallow breathing. Therefore, syndrome differentiation and treatment says: "The lung is the master of qi, and the kidney is the root of qi. The lung governs the outgassing, and the kidney governs the intake of qi. Yin and Yang intersect and breathing is harmony. "
Although the lung is the main respiratory movement, it is also related to other viscera. The normal movement of human breathing depends on the release of lung qi, the absorption of kidney qi, the improvement of heart qi and the smooth regulation of liver qi. So, it's hard. Four difficulties: "Breathe out the heart and lungs and inhale the kidney and liver." Because the kidney stores essence, it is "the foundation of sealing and storing" (Su Wen). On the theory of six zang-organs), the kidney (Mingmen) is "the root of the twelve meridians, the gate of breathing and the source of triple energizer" (Wang Kentang's Linglan Yaolan), while the kidney meridian is yin deficiency "it goes straight from the kidney to the liver diaphragm and enters the lung" (Lingshu). Meridian ")," kidney meets lung "(Lingshu). Therefore, the sealing function of the kidney can absorb the natural clear air inhaled by the lungs, thus making the breathing even, deep and powerful. As "Medical Science" said: "Qi originates from the kidney and belongs to the kidney. Therefore, the qi of the kidney has a deep breath. "When the lungs are in the upper focus, they breathe; If the kidney is in the lower coke, then inhale; When the lung and kidney are United, it takes a deep breath and has a uniform rhythm.
Kidney governing qi is based on kidney storing essence, which is the embodiment of kidney's sealing function in respiratory movement. Therefore, Li Qian in the Ming Dynasty said in "Introduction to Medicine": "People have two kidneys, ... this is the basis of sealing." If the kidney essence is sufficient, the intake of qi is normal, and the breathing is deep and powerful; If the kidney essence is insufficient, the kidney qi is deficient, and the absorption is weak, it can neither absorb the clear qi inhaled by the lungs in nature, nor adjust the depth of breathing, resulting in shallow breathing, excessive breathing, asthma and respiratory failure when moving. That is, just like "Lingshu". Meridian says: "The kidney foot is short of yin pulse, which means that it is hungry when moving, and its face is like lacquer wood. There is blood when coughing and vomiting, and there is breathing when drinking. " The Standard of Syndrome Differentiation and Treatment says: "Kidney qi rushing will lead to true yuan failure, and …… qi will not return to yuan."
The theory that kidney is the foundation of qi is of great significance to the diagnosis and treatment of clinical diseases. Because the kidney is the root of qi, chronic cough and asthma often hurt the kidney, that is, as the Guide to Clinical Medical Records says, wheezing is "in the lung, but in the kidney". The standard of syndrome differentiation and treatment also says: "lung deficiency leads to shortness of breath, and long-term illness leads to lung and kidney deficiency." Or it will hurt the kidney, and the essence will be taken away from you, which will not be solid at all, so that your qi will be lost, and you will be out of it, and you will rush up to catch your breath against your qi. " Therefore, in clinic, chronic bronchitis, asthmatic bronchitis, asthma and other diseases are mostly treated from the lung at the initial stage, and those who fail to heal for a long time are mostly treated from the kidney. The method of tonifying kidney and relieving asthma is often effective.