Results: The volatile oil-contents in Folium Rhododendri Daurici from different habitats differ widely and Oleum Rhododendri Daurici is one of the main active ingredients of Xiaokechuan capsules.

• 结果：不同产地的满山红中挥发油含量差别较大，满山红油是消咳喘胶囊中的主要活性成分之一。