The principle of the auricular acupuncture model is based on the theory that "the ear is a microcosm of the entire body", that is, each part of the auricle has corresponding connections with the internal organs, meridians and limbs of the human body, forming a microsystem. Models usually follow this theory, regarding the auricle as an inverted fetal image, with the upper part corresponding to the lower limbs and trunk, the middle part to the internal organs and viscera, and the lower part to the head, face and five senses.

By marking dozens to hundreds of auricular points on the model surface, learners can intuitively understand the distribution and corresponding relationship of each point. When in use, the operator can perform auricular point location, memory and acupuncture practice through the model to master the accurate positions and functions of commonly used auricular points such as Shenmen, heart, liver and stomach.

The teaching principle lies in the combination of vision and operation to help learners establish a mapping cognition between auricular points and functional areas throughout the body, which is convenient for clinical applications such as pain relief, addiction treatment, and regulation of visceral functions. The auricular acupuncture model also has the advantages of safety and reusability, avoiding the risk of direct practice on the human body. It is an important tool for auricular acupuncture teaching, research and international exchange.