The main constituents in the essential oil from Gaultheria yunnanensis. are salicylic acid methyl ester (74.18%), hexadecane (1.59%), pentadecane (1.38%), 2-hydroxy4-methoxyacetoph-enone (1.09%).

• 透骨香挥发油主要化学成分是水杨酸甲酯(74.；18%25)、十六烷(1