Traditional Chinese medicine believes that meridians are channels that run qi and blood, connect zang-fu organs with body surface and various parts of the body, and are the regulation system of human functions. Meridian is also the basis of human acupuncture and massage and an important part of Chinese medicine. Meridian theory is one of the cores of the basic theory of traditional Chinese medicine, which originated in ancient times and serves today. In the long medical history of more than two thousand years, it has been playing an important role in safeguarding the health of the Chinese nation.

The original meaning of "Jing" is "longitudinal silk", which means path. Simply put, it is the main path in the meridian system, which exists in the body, runs through the top and bottom, and communicates inside and outside; The original meaning of "network" is "network". Simply put, it is the auxiliary road separated from the main road, which exists on the surface of the car body and criss-crosses the whole body. "Lingshu Pulse Degree" says: "The meridian is the inside, the branch and the horizontal are the collaterals, and the other is the sun." This means that the size and depth of the pulse are different, namely "meridians", "collaterals" and "sun pulse". The main contents of channels and collaterals are: the twelve meridians, the twelve meridians, Eight Meridians of Strange Meridians, Fifteen Collateral Meridians, the twelve meridians and Twelve Skin Branches. Among them, twelve meridians are the main meridians and fifteen meridians are the main meridians. They intersect vertically and horizontally and spread all over the body, connecting the inside and outside of the human body, viscera and limbs into an organic whole.