The invention provides a method for controlling the quality of a
Chinese traditional throat medicine. The method comprises the steps: (1) discriminating
ginseng,
radix trichosanthis and liquorice contained in the
Chinese traditional throat medicine by the
microscope discrimination method; (2) detecting
vitriol in natrii sulfas exsiccatus by the
barium chloride reagent precipitation method; (3) detecting natural
indigo in the
Chinese traditional throat medicine by the thin-layer
chromatography, and comparing the natural
indigo with indigotin and
indirubin; (4) detecting
borneol and
menthol by the thin-layer
chromatography; (5) detecting
ginseng contained in the Chinese traditional throat medicine by the thin-layer
chromatography, and comparing the Chinese traditional throat medicine with
ginseng, ginseng
saponin Rb1,
ginsenoside Re and
ginsenoside Rg1; (6) detecting liquorice contained in the Chinese traditional throat medicine by the thin-layer chromatography; and (7) detecting the content of
andrographolide and dehydrolyzed
andrographolide contained in the Chinese traditional throat medicine. The method used for controlling the quality of the
Chinese traditional medicine overcomes the defects of the prior discrimination method that the specificity is not enough; the thin-layer chromatography is used for detecting natural
indigo,
borneol and
menthol simultaneously, the sampling amount is difficult to grasp, and excellent separating effect is difficult to reach, the thin-layer chromatography can just detect limited ingredients, i.e. natural indigo,
borneol and
menthol, thus failing to effectively discriminate the Chinese traditional throat medicine; the prior discrimination method fails to measure the content of effective ingredients, and can not effectively control the defects of product quality. The method improves the
specialty and the quality stability, and ensures security and effective use of the medicine by users.