Objective: The research is to study the relative specificity and the clinical effect of Neiguan (PC6) point Treat Premature beats comparing with that of Xuanzhong(GB39).

• 目的:本研究通过针刺单穴内关与悬钟治疗早搏的疗效比较,来观察内关穴治疗早搏的相对特异性,证明内关穴治疗早搏的临床疗效。