Huangdi Neijing mainly focuses on medical contents, and establishes the theories of Yin and Yang, five elements, pulse condition, Tibetan image, meridians, etiology and pathogenesis, symptoms, diagnosis, treatment, health preservation and luck.

Huangdi Neijing laid the foundation of human physiology, pathology, diagnosis and treatment. It is a medical work with great influence in China and is called the medical ancestor.

Contents and thoughts of Huangdi Neijing.

Huangdi Neijing accepted the materialistic philosophy of China's ancient monism of Qi, holding that man is a part of the whole material world, and everything in the universe is formed by its original material "Qi". Under the guidance of the concepts of "man is related to heaven and earth" and "corresponding to the sun and the moon", man and nature are closely linked.

Huangdi Neijing holds that man and nature are closely related, nature and man are interrelated, and the movement and change of nature have an impact on human body all the time. "Su Wenbao's Theory of Quan Ming Xing" said: "Man is born with the spirit of heaven and earth, and is formed by the method of four seasons." It means that people, like everything in the universe, are born of the qi of heaven and earth and grow according to the law of the four seasons.