Chromatography for analysis of the samples with He、 Ne、 Ar、 N2、 CH4、 CO、 C2H6、 CO2、 SF6、 CS、 H2S、 SO2、 N2O and unknown carbon compound etc.14 components by once-shot sample introduction was described.Chromatograph with four detectors (TCD,FID,FPD,ECD) made by DANI company was used.The analytical schematic layout was as the following Fig.1.According to the above mode the accurate result and reduced analytical time can be obtained.