Auricles are located on both sides of the head, and their front and outer sides are irregularly concave. The periphery is curled and called helix, and the lower end is connected with the earlobe. There is an arc-shaped bulge in front of the parallel helix, which is called the antihelix. The narrow depression between the helix and the antihelix is called auricle boat. The deep fossa in front of the helix is called concha, which is divided into upper concha navicularis and lower concha cavity by the foot of helix, and the concha cavity leads to the external auditory canal. The protrusion in front of the concha cavity is called tragus, and the protrusion in the back to the lower part of the helix is called tragus; There is a depression between the tragus and the opposite tragus, which is called the notch between the tragus.

The auricle is composed of fat and loose connective tissue except the earlobe, and the rest is covered with elastic cartilage and skin. Auricular skin is thin, lacking subcutaneous tissue, but rich in blood vessels and nerves.

The earlobe used to be a common part of peripheral blood in clinic, but it was abandoned because of inconvenient operation. There are many acupoints in auricle, and Chinese medicine often treats some diseases through auricular acupuncture or local acupoint application.