目的：探讨前半规管良性阵发性位置性眩晕（anterior canal benign paroxysmal positional vertigo, AC-BPPV）患者的眼震和管型受累特征。方法：回顾性收集AC-BPPV患者20例的临床资料，在眼震视图下 行Dix-Hallpike试验，根据其眼震特征对其诊断，并采用Yacovino法对其进行手法复位治疗。结果：①本组 20例患者中，左侧前半规管受累10例（50.0%），右侧前半规管受累5例（25.0%），侧别不能明确判定者5例 （25.0%）。②眼震特征：Dix-Hallpike 试验：单侧下跳性眼震 11 例（55.0%），单侧下跳伴扭转性眼震 1 例 （5.0%），双侧下跳性眼震5例（25.0%），一侧下跳、另一侧下跳伴扭转性眼震2例（10.0%），双侧扭转伴下跳 性眼震 1 例（5.0%）。坐起时出现眼震逆转 5 例（25.0%）。③Yacovino 手法复位：首次手法复位治愈 12 例 （60.0%），有效7例（35.0%），无效1例（5.0%）。1周后复查痊愈15例（75.0%），有效4例（20.0%），无效1例 （5.0%）。结论：AC-BPPV患者在Dix-Hallpike试验中诱发出的眼震多样，单侧多见。多数为下跳眼震不伴 有扭转成分，部分患者双侧Dix-Hallpike试验均能诱发出眼震；Yacovino法手法复位治疗常常效果较好。

To investigate the nystagmus and affected canal features of anterior canal benign paroxysmal positional vertigo (AC-BPPV). Methods: A retrospective analysis was performed on 20 patients with AC-BPPV. All patients were diagnosed based on the presence of nystagmus during the Dix-Hallpike and were treated by Yacovino maneuver. Results: Among the 20 AC-BPPV patients admitted, left anterior semicircular canal was involved in 10 (50.0%) patients, right anterior semicircular canal was involved in 5 (25.0%) patients, and 5 (25.0% ) patients were unclear about the involved semicircular canal. In the Dix-Hallpike test, unilateral down-beating nystagmus (DBN) was observed in 11 patients (55.0%), unilateral DBN with torsional components was observed in 1 patient (5.0%), DBN was observed in 5 patients (25.0%), DBN in one side and DBN with torsional components in the other side was observed in 2 patients (10.0%), and bilateral DBN with torsional components was observed in 1 patient (5.0%). Reversal nystagmus was observed among 5 patients after returning to sitting up position (25.0%). 12 patients (60.0%) and 15 patients (75.0%) were cured by Yacovino maneuver after the first time treatment and one week follow-up, respectively. 7 patients (35.0%) and 4 patients (20.0%) were effectively treated by Yacovino maneuver after the first time treatment and one week follow-up, respectively. And the Yacovino maneuver was ineffective in 1 patient (5.0%) after the first time treatment and one week follow-up. Conclusion: Most of the patients with AC-BPPV showed no occurrence of the torsional component in the DBN nystagmus induced by the Dix-Hallpike test. In some patients, nystagmus could be induced by bilateral Dix-Hallpike test. The effect of Yacovino maneuver is often effective.