Bitter almonds has been widely used to treat cough,asthma and tumors in oriental medicine.Amygdalin(D-mandelonitrile-β-D-gentiobioside) is the active ingredient of bitter almonds,which is one of the most common cyanogenic glycosides[1].Degradation of amygdalin by β-D-glucosidase can lead to the production of hydrocyanic acid which relaxs the respiratory center and produces antitussive and antiasthmatic effects[2].