Location: in the face, in outer corners of the mouth,  away about 0.4 cun, inline straight up with the pupils

Anatomy: in the orbicularis oris muscle, in deep layer are the cheek muscles; facial arteries and veins; with distributing of the branches of facial nerve and infraorbital nerve, in the deep layer are the branches of the buccinator nerve.

Indications: crooked mouth, salivation, eyelids movements.
 

定位： 在面部，離開口角外側，0.4 同身 寸處，上對瞳孔。

解剖： 在口輪匝肌中，深層為頰肌;有臉部的動、靜脈；佈有面神經和眶下神經分支，深層為頰肌神經的末支。
 

主治： 口歪，流涎，眼瞼（目閏）動，臉 部神經麻痺。