目的：为前颅底手术的前方入路和眶外侧入路提供相关的解剖依据。方法：通过对４０例颅骨的测量，确定鼻根点和眶额颧点至前颅底上下方各结构的距离和夹角。结果：鼻根点至视交叉沟前缘、视神经管颅口、颈内动脉沟前端、蝶骨小翼后缘、筛前孔和筛后孔的距离分别为（４９．７±２．７）ｍｍ、（４９．９± ２．６）ｍｍ、（５３．５ ± ２．３）ｍｍ、（５１．３ ± ３．０）ｍｍ、（２５．３ ± ２．２）ｍｍ、（３３．０ ± ２． ２）ｍｍ；眶额颧点至盲孔、视神经管颅口、眶上裂内、外端和眶下裂内、外端的连线长度和各连线与正中矢状面成角分别为（４８．０±２．２）ｍｍ和９１．０°±３．０°、（５２．５±２．９）ｍｍ和４３．６°±３．５°、（５１．０±２．２）ｍｍ和４０．４°±４．２°（３４．５±２．７）ｍｍ和３６．６°±５．７°、（５０．３±２．３）ｍｍ和３７．８±４．３°、（２５．８±２．３）ｍｍ和２４．７°±３．３°。结论：两种手术入路有关测量结果，有助于手术入路设计，并可为术中准确定位有关结构提供参考依据。 Objective: To provide anatomic evidence for anterior approach and lateral orbital approach. Methods: By measuring the skull of 40 cases, the distances and angles between the nasal root and orbital frontal zygomatic to the upper and lower anterior skull base were determined. Results: The distances from the nasal root to the front of optic canal, the cranial foramen of the optic canal, the anterior dorsal carotid artery, the posterior edge of the sphenoid bone, the anterior ethmoidal mesh and the posterior ethmoidal hole were (49.7 ± 2.7) (49.9 ± 2.6) mm, (53.5 ± 2.3) mm, (51.3 ± 3.0) mm, (25.3 ± 2.2) mm, (33.0 ± 2. 2) mm; Orbital frontal zygomatic point to the blind hole, the optic canal canal cranial, orbital fissure, the outer end and infraorbital fissure, the outer end of the connection length and the connection angle with the median sagittal plane (48.0 ± 2.2) mm and 91.0 ° ± 3.0 °, (52.5 ± 2.9) mm and 43.6 ° ± 3.5 °, (51.0 ± 2. 2) mm and 40.4 ° ± 4.2 ° (34.5 ± 2.7) mm and 36.6 ° ± 5.7 °, (50.3 ± 2.3) mm and 37.8 ± 4 .3 °, (25.8 ± 2.3) mm and 24.7 ° ± 3.3 °. CONCLUSION: The results of the two surgical approaches are helpful to the design of surgical approaches and provide a reference for accurately positioning the relevant structures in the surgery.