在乳突手术中,将面神经从病变中鉴别开来,是去除病变,避免面神经损伤的重要保证。文中着重介绍了管壁中的面神经走形,以及保留和非保留外耳道后壁两种术式中的面神经鉴别和避免损伤的要领。 In mastoid surgery, the facial nerve is identified from the lesion, which is an important guarantee for removing lesions and avoiding facial nerve injury. This article focuses on the facial nerve in the wall of the walk, and retention and non-retention of the posterior wall of the auditory canal in two ways to identify and avoid facial nerve essentials.