The volatile fraction of Oenanthe stolonifera DC. was extracted by a steam distillation under the atmospheric pressure and analyzed by gas chromatography(GC) and gas chromatogra-phy/mass spectrometry(Gc-MS) The experimental results revealed the presence of 63 volatile components. Among them 39 components identified were composed of 20 hydrocarbonss(61.94%) 9 alcohols(8.76%) 3 ketones(11.5%) 1 ester(1.34%) 1 aldehyde (2.29%) and 5 miscellaneous ulcorner92.35%) The major volatile components of Oenanthe stolonifera DC. were limo-nene(12.12%) pulegone(94.8%) germacrene D(8.34%) and $eta$-pinene(7.68%)