The kidney is the essence of the innate nature – “innate nature” refers to the essence that is endowed to the parents, the “two gods fighting each other”, and the innate qi that is born from the innate essence, which is inherited and is the origin of life, and can also be It can also be interpreted as the fertilized egg of the male sperm united with the female egg. “The kidneys collect essence and are the main source of vital energy, which refers to the Yang energy in the kidneys and is the source of life. The kidney’s essence is hyperactive, the heavenly aoi arrives, the male essence is easily emitted, the female Ren vein is open, the Tai Chong vein is strong, and the two gods fight each other on time, so they can have a child; after fertilization, the whole process of growth and development, and the ability to resist external evil, is determined by the strength and weakness of the kidney’s essence. Therefore, the kidneys are the foundation of the first heaven. The spleen is the origin of the later heaven, the source of Qi and blood biochemistry – refers to the growth and development of the two essences and two spirits in the mother’s body, as well as the nutrient supply for human growth and development after birth, all need the nutrients ingested by the spleen and stomach to digest, absorb the water and grain essence, transport the water and grain, water and moisture, the role of ascending the clear and descending the turbid, and the transformation of Qi and blood, therefore, once there is this body, must be through Diet into the stomach, the spleen and stomach together to produce Qi and blood, as the basis of the day after. The theoretical content of “kidney is the essence of the first heaven, spleen is the essence of the second heaven” The kidney is the essence of the first heaven, emphasizing the role of the kidney in human growth and development and reproductive function, mainly as follows: 1, promote human reproductive function Kidney essence is the original material of human embryonic development, with the role of determining the fertility. After birth, the kidney essence gradually filled, the organs and tissues grow and expand; to puberty, the kidney essence is full, Tianjui followed, the gonads then develop and mature, and see men spermatorrhea, women menstruation on time, the sexual function is mature, reproductive capacity; people to old age, the kidney essence gradually loss, Tianjui gradually less, sexual function and reproductive capacity gradually reduced. As the Su Wen. Shanggu Tianzhen said: “Women …… two seven and the day sebum to, the Ren vein through, Taichong vein Sheng, menstruation to time, so there are children; …… seven seven seven, Ren vein deficiency, Taichong vein decline less, the day sebum exhausted, the ground channel is not accessible, so the form is bad and no children. Men …… twenty-eight, the kidney is abundant, the heavenly sap to, the essence overflowing diarrhea, yin and Yang and, therefore, can have children; …… seven-eight, the heavenly sap is exhausted, less essence, kidney failure, the form is bad and extreme.” 2, promote the growth and development of the human body kidney essence has a very strong vitality, with the kidney essence by the strength and weakness of the changes, the human life activities show regular changes in growth and old age. As “Suwen. Shanggu Tianzhen said: “women seven years old, the kidney qi Sheng, teeth more hair long; …… three seven, the average kidney qi, so the real teeth and long pole; four seven, the tendons and bones firm, hair long pole, the body is strong; five seven, Yangming pulse decay, face began to scorch, hair began to fall; six seven, three Yang pulse decay in the upper, face are scorched, hair began to white; seven seven seven, Ren pulse deficiency, Tai Chong pulse decay less, the body is strong. Tiankui exhaustion ……. Men eight years old, kidney qi real, hair long teeth more; two eight, kidney qi Sheng, Tian Kui to, essence overflow diarrhea …… eight eight, then teeth hair go.” It can be seen that the kidney is the driving force of growth and development, kidney gas is abundant, the growth and development of normal, firm teeth and hair, strong bones and strong, normal function of the viscera; if the kidney deficiency, the growth and development of retardation, five soft five late, or teeth off hair fall, premature aging, the viscera function is reduced and other symptoms. As Li Zhongzi said: “When a baby is first born, the first two kidneys. Before this body, there are two kidneys, so the kidney for the internal organs of the root of the twelve veins, the root of the whistle, the source of the three jiao, and the human capital for the beginning. Therefore, it is said that the innate essence of the kidney.” Essential reading for medical practitioners. Medical theory of the diagram said. 3, to defend against external evil, to prevent disease The essence of the kidney can not only promote human growth and development and reproductive function, but also has the role of defending the body against evil.” The true qi is received from the sky and fills the body with the grain qi” (Ling Shu. The “prickly section of true evil” says: “True qi, that is, the body’s true essence of qi. It is made from the combination of the innate qi and the clear qi of nature and the essence of water and grain, among which the essence of the kidney plays an important role. Therefore, if the kidney essence is sufficient, the true energy is abundant, the body is strong, strong resistance to disease; if the kidney essence is insufficient, the true deficiency, the body is weak, easy for disease.” Sun Simiao cloud: “less essence is sick, the essence of death.” Young and strong people, kidney essence is full, the true qi is sufficient, so the body is healthy and less disease; teenagers or the elderly, kidney essence is insufficient, kidney deficiency, the power to defend the evil is weak, so weak and sick. The spleen is the essence of the latter, emphasizing the functional role of the spleen in transporting grain and food and water and drink. 1. After the initial digestion of grain and food by the stomach, it is sent down to the small intestine for further digestion, and the essence of it is absorbed by the spleen under the action of the small intestine to differentiate between clear and turbid, and is transferred up to the heart and lungs by the spleen’s action of dispersing essence, and is dispersed throughout the body to nourish other internal organs and various parts of the body. The essence material transported by the spleen is the material basis for the production of essence, qi, blood and fluid, which constitute the human body and maintain its vital activities. The transport function of the spleen depends on the spleen qi. If the spleen is healthy, its function of transporting water and grain is normal, and the absorption of essence is sufficient, then there is a source of biochemistry of qi, blood and fluid, and the essence in the kidneys can be constantly cultivated and replenished, and the organs and tissues of the viscera are fully nourished, thus maintaining their normal physiological activities. On the contrary, if the spleen’s function of transporting water, grain and essence is reduced, the body’s digestive and absorption functions will also be abnormal, resulting in abdominal distension, loose stools, loss of appetite, or wasting. So it is said that “the spleen is the source of the spleen, the source of Qi and blood biochemistry”. 2.Transportation of water-drink, also known as “transporting water-dampness”, is the function of the spleen to absorb, transfer and disperse water-liquid, thus maintaining the balance of water-liquid metabolism in the body. Water drink into the stomach, after absorption, its fluid from the spleen up to the lungs, and spread to the whole body. By the lung’s function of propagation and purification, the internal to nourish the internal organs, external to moisten the muscle coup skin; its turbidity, part of the sweat and outflow, part of the kidney down to the bladder; visible spleen in the body’s water metabolism process plays an important role in the transfer and dispersal. Therefore, a healthy spleen enables the body’s water to circulate normally and not to accumulate, thus preventing pathological products such as dampness, phlegm and drinking. “kidney for the innate essence, the spleen for the innate essence” the relationship between the two 1, physiological: innate and innate mutual capital to produce the spleen must be warmed by the kidney yang can be healthy; kidney essence and rely on the spleen to transport water and grain essence constantly replenished, in order to flourish. Therefore, in “The Medical Gate’s Rod and Drink”, it is said that “the spleen and stomach can be biochemically stimulated by the encouragement of the kidney’s yang, and the yang is precious to be solid and dense, so it can be solid and dense because it depends on the spleen and stomach to biochemically stimulate the yin essence to nurture it”; this fully illustrates that the innate warmth stimulates the innate and the innate is supplemented by the innate. In short, the spleen and stomach are the sea of water and grain, and the kidneys are the sea of essence and blood. “The beginning of human birth is based on the original of essence and blood, and the birth of human is based on the nourishment of water and grain. Non-spirit and blood can not establish the foundation of the body, non-water and grain, can not become a strong body.” “The sea of water and valley depends on the innate nature as the master, and the sea of essence and blood depends on the latter day as the capital. Therefore, from birth to death, where the innate deficiencies, but the strength of the cultivation of the latter, then the work of replenishing the heavens, can also be in its strong half” “Jing Yue Quan Shu. Pathology: Spleen and kidney interact with each other as cause and effect Kidney essence deficiency and spleen essence insufficiency, spleen qi weakness and kidney qi deficiency, spleen yang deficiency and vital fire failure, spleen yin (stomach yin) deficiency and kidney yin failure, etc. can often interact with each other as cause and effect. If the kidney yang is insufficient, it cannot warm the spleen yang, resulting in spleen yang failure or prolonged deficiency of spleen yang, which in turn damages the kidney yang and causes deficiency of kidney yang, both of which eventually lead to deficiency of spleen and kidney yang. Because of the theory of “kidney is the first heaven” and “spleen is the second heaven”, the dialectical treatment of deficiency of spleen and kidney essence or deficiency of spleen and kidney yin and yang has the following principles: “tonifying the kidney is not as good as tonifying the spleen” and “tonifying the spleen is not as good as tonifying the kidney”. To a certain extent, the latter plays a decisive role in the health of the human body, but the latter is also an important factor, and it should be distinguished according to the patient which is more important, which is first, or warming the kidney yang and tonifying the spleen yang or warming the spleen yang and tonifying the kidney yang. In conclusion, the spleen and the kidney are physiologically supported by each other and promote each other; pathologically they influence each other and are mutually causative; therapeutically: under a holistic concept, we should distinguish which is more important, which is first and which is second, and treat them with dialectical evidence.