Abstract: The 28 components in refinery gas can be detected quickly and accurately by optimizing the test conditions of chromatography. The gaseous hydrocarbons of C₁-C₆⁺ can be detected by a flame ionization detector (FID) and the common permanent gases can be detected by double thermal conductivity detectors (TCD) within 6 min. At the same time, the precision, linearity, detection limit and accuracy of the analysis method were studied. The precision results indicated that the injection mode by control valve with constant flow is better than the mode of pressure reducing valve. The 28 components of refinery gas in a certain concentration range showed a good linear relationship. The detection limits of the analytical method both hydrocarbons and permanent gases were about 5 mol/mol and 30 μmol/mol, respectively. In addition, using the on-line drift compensation method on the basis of control valve with constant current, the relative standard deviation of the measured results is less than 0.5%, and the relative difference is less than 1% between the analytical value and the nominal value of each component.