The essential oils of the flower-buds, leaves and stems of Filipendula palmata(Pall.) Maxim. were analyzed by GC and GC-MS. Thirty-three, forty-seven and forty-seven compounds in the flower-buds, leaves and stems were identified, respectively. Methyl salicylate exists in a great amount which is up to 70.10% in the flower-buds. Its amount is also high in other two parts. The data obtained show that it may be one of the main natural mosquito-expelling and pain- alleviating components in the three parts. The flower-buds are the main active part with the mosquito-expelling function.
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