The theory of "unity of form and spirit" is the theoretical basis of psychological intake of traditional Chinese medicine. Traditional Chinese medicine calls all kinds of psychological activities "gods". It is believed that the activity of god is the expression of the activity of human viscera, that is to say, the five zang-organs are regarded as the organs on which the spirit depends. Neijing says that "form is the essence of God" and "invisible is the life of God"; He also said: "The five internal organs: the heart stores the spirit, the lung stores the spirit, the liver stores the soul, the spleen stores the meaning, and the kidney stores the will"; "The heart is the master of the five internal organs, and God is also the house of the spirit. Evil spirits can endure, and they are painful and heartbroken. If they go, they will die. The five zang-organs are the core of human life, and human spirit is produced by essence and body fluid, so the five zang-organs are closely related to mental activities. When the five internal organs are full of qi and blood, the spirit is normal, the form and spirit are unified, and the spirit is wise. Neijing says: "Qi and blood are in harmony, camp and health are in harmony, the five internal organs are formed, and the spirit of qi and blood is perfect, which makes people become people", and "the spirit of qi and blood of people is dedicated to those who are born for life". On the contrary, deficiency of qi and blood in the five internal organs can lead to mental fatigue, delirium and even death. " "Lingshu" said: "When you are a hundred years old, your five internal organs are empty, your soul is gone, and you will be lonely after all. The "all souls have disappeared" mentioned here does not necessarily mean centenarians. If people of any age do not pay attention to nursed back to health, it will harm the function of storing essence in the five internal organs, and over time, it will also lead to the same consequences.

The concept of form and spirit in traditional Chinese medicine not only recognizes God's dependence on form, but also recognizes God's reaction to matter. It is considered that the spirit controls and dominates the qi and blood of zang-fu organs, and human psychological activities restrict human physiological activities, which is one of the characteristics of the concept of form and spirit in traditional Chinese medicine. The role of God in physical activities is mainly manifested in two aspects: first, God can coordinate the viscera, qi, blood, yin and yang, and maintain the balance of human internal environment; Second, God can adjust the Yin and Yang of the zang-fu organs, make them actively adapt to the changes of nature, and buffer the emotional stimulation caused by external factors, thus maintaining the balance between the human body and the external environment. Therefore, Neijing pays special attention to the importance of nourishing the spirit, and holds that "those who are absent die and those who get the spirit live".

In a word, God is attached to the form, but if it is invisible, God cannot exist. The spirit, in turn, can dominate and dominate all activities of the body. Without God's body, it's like a walking corpse. Therefore, Chinese medicine pays special attention to mental health in health preservation, that is, through people's conscious psychological cultivation, they pay attention to mental health and achieve mental health, and influence physical activities with positive psychological activities, so as to achieve spiritual, physical and spiritual prosperity, which will last for a hundred years. This is also what modern medicine attaches importance to. For example, researchers from the British Common Cold Research Group conducted psychological tests on healthy volunteers. The psychological stress of the subjects was graded, and then the cold virus was injected into the body. Results The group with great psychological pressure and the group with introverted personality were more seriously ill than the group with less psychological pressure and the group with extroverted personality. This shows that people with psychological imbalance and introverted personality can't stand the blow of cold virus. This also fully shows the importance of mental health to maintain the balance between the internal and external environment of the human body.

Spirit and essence, body fluid and blood are intrinsically linked. Essence, qi and spirit were called three treasures by the ancients. Essence is the substance produced by grain essence in the later stage, and it is the material basis of various activities of human body; Qi is produced by essence, which is the main substance that produces all physiological functions of the body; God is the expression of the interaction between essence and qi and the summary of all physiological and psychological activities of the human body. It can be seen that the relationship between them is very close. Qi is produced by essence, and essence's metaplasia depends on qi, and essence * * * is combined into god. Therefore, those who are full of energy must be very prosperous. On the other hand, people who are not energetic must be deficient in essence. Excessive consumption of essence will weaken the generation of qi; Excessive gas consumption will also reduce the generation and metaplasia of essence, while insufficient essence will be insufficient. On the other hand, if God is excessively destroyed by mental activities, the deficiency of God will also affect the physiological function of essence and make people weak. This is the dialectical relationship between essence and spirit in human body, that is, the concept of unity of form and spirit.

Body fluids and blood also come from Shui Gu's subtlety. Traditional Chinese medicine often mentions the names of essence, qi, body fluid, body fluid, blood and pulse. In fact, they are not only homologous, but also interdependent and interactive. Therefore, body fluid loss, qi and blood loss; Deficiency of qi and blood can also lead to the loss of body fluid. This is the truth in Neijing that "those who take blood have no sweat, and those who take sweat have no blood". Because sweat is produced by body fluid, people with insufficient body fluid naturally sweat less or no sweat; On the other hand, excessive sweating can also damage body fluids. Therefore, maintaining the normal physiological functions of body fluids and blood is conditioning.