Objective To observe the impact of licorice rat intestinal smooth muscle, and to understand the relationship between licorice and gastrointestinal motility. The methods were divided into normal group, licorice made decoction 4, 8, 16, 32, 64 g / kg dose group, daily ig. Administered one hour after the last observed rat gastric half-emptying time; using oral administration of charcoal the end, the determination of the rate of stomach advancing. Licorice decoction dose size of the rat small bowel movements have a direct impact on smaller doses inhibited rat small intestine propulsion function, the larger dose of rat intestinal propulsion promote.