Objective: To study the effect of 3 kinds of extract of Yunmuxiang on gastric emptying and intestinal propulsion of mice

and to find the material basis of Yunmuxiang which affact gastric emptying and intestinal propulsion of mice. Method: Using modified determination of content of phenol red to observe the effect of 3 kinds of extract of Yunmuxiang on gastric emptying and intestinal propulsion of mice in normal state

hyperthyroidism state caused by neostigmine

inhibiting state caused by atropine. Result: Volatile oil of Yunmuxiang could significant decrease gastric emptying rate of phenol red of normal mice(P<0.01)

could significantly improve gastric emptying rate of phenol red in the state of inhibition caused by atropine(P<0.01)

could significantly decrease gastric emptying rate of phenol red in the state of hyperthyroidism caused by neostigmine(P<0.05). Conclusion: The extract of Yunmuxiang can inhibit gastric emptying of normal mice

can improve gastric emptying of mice in the state of inhibition caused by atropine

antagonistise gastric emptying and intestinal propulsion of phenol red in the state of hyperthyroidism caused by neostigmine. Volatile oil and low-polar substances are more likely to the material basis of Yunmuxiang which affact gastrointestinal tract of mice.