The principle of the standard acupuncture model is mainly reflected in its precise reproduction of human meridians and acupoints as well as its teaching assistance function. This model is designed and manufactured based on traditional Chinese medical theories such as the "Huangdi Neijing" and modern anatomical proportions. Its surface is marked with the directions of the fourteen meridians and some of the eight extraordinary meridians, and the commonly used acupoints are accurately marked on the body surface. Through this intuitive presentation, learners can clearly understand the patterns of meridian distribution and acupoint location, thereby establishing a systematic framework of acupuncture knowledge.

The principle lies in concretizing the abstract theory of meridians. Traditional Chinese medicine holds that meridians run throughout the body, but in books, they are mostly presented through text and charts, making it difficult for learners to form a direct impression. The standard acupuncture model fixes the meridians and acupoint positions of various parts of the human body through three-dimensional modeling, allowing students to directly observe, touch and practice by comparison, which greatly improves the learning efficiency. In addition, some high-end models are equipped with conductive or light-emitting systems. When the acupuncture is in place, feedback will be generated to verify whether the acupoint positioning is accurate. This design further enhances the practical training effect.

In conclusion, the principle of the standard acupuncture model is to transform the traditional meridian theory into visible, touchable and operable teaching tools through highly realistic and intuitive means. This not only makes up for the limitations of paper textbooks, but also enhances the scientificity and practicality of acupuncture teaching and clinical training.