The infraorbital foramen is mainly located 0.5 cm below the midpoint of the infraorbital rim, and it is mainly manifested as an oval-shaped hole. There are infraorbital nerves and blood vessels passing through this place, and the oval hole is generally inward and upward. The main functions of infraorbital foramen are as follows: 1. Nerve block: if it can be blocked through infraorbital foramen, it can be used for stomatological surgery and play its anesthetic role in the upper alveolar area, and it can be used for pentacarpal surgical treatment at the same time. 2. Local anesthesia: it can be applied mainly to the symptom caused by facial nerve pain, and it can be applied in the case of tooth extraction and so on. In addition, if the infraorbital foramen injury occurs, it usually manifests as facial numbness symptoms, mainly due to infraorbital nerve injury.