Abstract: The groove and foramen of the orbital branch of the middle meningeal artely and the lateral orbital groove were examined on 236 skulls ( 472 orbits) in Chinese adult. The main results are as follows: the incidence of the groove of the orbital branch of the middle meningeal artery is 55.9%; the incidence of the lateral orbital groove is 17.6%, in which 24 skulls(28.9%) are bilateral.

Key words: Orbit; The foramen of the orbital branch of the meningeal artery; The lateral orbital groove