Abstract:The effect of Acorus tatarinowii on the gastrointestinal myoelectric activity and mechanism in rats was studied electrio physiologically .The result indicates that Acorus tatarinowii helps inhibit the gastrointestinal myoelectric activity.This inhibitory effect is believed to take place through the blocking of cholinergic M and non cholinergic M receptors,and has nothing to do with adrenergic α and β receptors.