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.