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The flower of Trollius chinensis is a kind of perennial wild herb.It is effective on relieving internal heat and detoxiflcation,and it is used for treating upper respiratory infections in Chinese folk medicine and so on.In this paper, the chemical constituents of Trollius chinensis were detected by Headspace solid phase microextraction/gas chromatography with mass spectrometric detection using home-made sol-gel benzo 15 crown 5 fiber (B15C5) on HP-Innowax capillary column, and their relative contents were determined by area normalization method.