The completion of Huangdi Neijing is a milestone in the history of TCM health preservation, which laid the foundation for TCM health preservation. The contribution of Neijing to TCM health preservation mainly includes:

1, emphasizing essence, qi and spirit as the three treasures of human body.

2. There are different periods of human growth, development and aging.

3. Established the health-keeping rule of "correspondence between heaven and man".

4. The establishment of meridian theory has laid a foundation for the development of Qigong health preservation.

5. Summarized many health preserving methods and rules before the Warring States Period.

Before Neijing, the theory of health preservation was in the practical stage, and there was no systematic theory of health preservation. With the advent of Neijing, TCM health preservation is developing vigorously under the guidance of TCM theory. In a word, the contribution of Neijing to TCM health preservation is enormous, which has laid a solid theoretical foundation for TCM health preservation. Since then, although the theory of TCM health preservation has been continuously improved and the methods have been continuously innovated, its main purpose has always been based on Neijing.