Abstract:A test method of pesticides residue quantity in Panax notoginseng has been established by means of titanium dioxide nanotube solid phase extraction（SPE）and gas ch romatography analysis technology. Pesticides in the samples were extracted with acetone as the extracting agent by means of ultrasonication and concentrated by solid phase extraction using titanium dioxide nanotube as extractor. hen the mixture of ethyl acetate and hex－ ane with the volume ratio of 1 ∶ 1 mL was used to elute pesticides from the extractor. Finally， pesticide concen－ tration in the eluant was detected by gas chromatography analysis technology. Residue quantities in Panax noto－ ginseng of 8 kinds of organophosphate， Methamidophos， Dichlorvos， Acephate， Trichlorfon， Dimethoate， Disulfoton， Parathion-methyl and Chlorpyrifos have been measured by using this newly established method. The results show that the average recovery rate of these 8 kinds of pesticides is 81.36 %-100.66 %， the relative standard deviation（RSD， n=3） is 2.21 %-4.28 %， and Quantitation limit is less than 4 μg/kg. The method has higher detection sensitivity and accuracy， which can satisfy the analyzing requirement of variety of trace organophosphorus pesticide residues in Panax notoginseng.