本文介绍了中药橡皮膏中三七的定性方法。采用氯仿,乙醇制备橡皮膏检液。应用硅胶G薄层同三七乙醇液进行比较,能很好地排除橡皮膏基质中橡胶和其它成分对三七皂甙的吸附和显色干扰。薄层层离,经显色后检液同三七乙醇液显示出Rf值一致的六个蓝色斑点。该方法,简便重现性好,有专属性。 This article describes the qualitative method of Chinese Panax pseudoginseng. Using chloroform and ethanol to prepare rubber paste test solution. The comparison of the silica gel G thin layer with the ethanol solution of Panax notoginseng can effectively eliminate the adsorption and color interference of notoginseng saponins by the rubber and other components in the adhesive plaster matrix. Thin layers were separated, and after the color development, the test liquid and the Panax notoginseng ethanol solution showed six blue spots with the same Rf value. This method is simple and reproducible and has special properties.