Abstract: Based on observation of fixed phase and temperature of chromatographic column and quantitative correction factor, a gas chromatographic method is established to analyze the components of products of propylene hy-dration and etherification (IPE\IPA\H2O) through chromatographic fractionating by using Chromosorb 103, taking hydrogen as supporting gas and testing by utilizing thermal conductivity cell detector (TCD). It is simple,rapid and accurate.