Capillary gas chromatographic column 1 (7.5%　W/W,3 5×0. 35mm i.d.) and column 2 (9.2% W/W,35×0.30mm i.d.) using butylammonium 4-to unesulfonate as stationary phase were prepared by the method of dynamic coating with mercury plug, and the solvent used was mixture of acetone and methanol (2 ∶1　V/V). The results　showed that the column had good chromatograpic pro perties, especially to strong polar compound, such as carboxylic acids and acoho ls could be separated well.