良性阵发性位置性眩晕 (BPPV)是最常见的前庭疾病 ,最常累及后半规管。其眩晕的特征是持续时间短(30～ 6 0 s) ,潜伏期 7～ 8s,呈阵发性发作 ,多在早晨刚睡醒时发生 ,常有头位突然运动诱发 ,如翻身、坐起、仰头等。本文研究目的是为了证明行 BPPV复位操作法并不一定非要有明显 Benign paroxysmal positional vertigo (BPPV) is the most common vestibular disease, most commonly involving the posterior semicircular canal. The vertigo is characterized by short duration (30 ~ 60 s), the incubation period of 7 ~ 8s, paroxysmal seizures, and more in the morning just woke up, often sudden head movement induced, such as turning over, sitting up, Look up and so on. The purpose of this study is to prove that BPPV reset operation method is not necessarily not obvious