三七是一种贵重药材.目前在药材市场购买三七药材,发现其中混有一定比例的其它药材的根茎,经过简单加工后与三七极为相似便混入三七中出售.三七为五加科植物三七panax notoginseng(Burk.)F.H.Chen的干燥根.具有止血散瘀,消肿定痛的功效.为保证用药的准确性和安全性,我们把三七中的伪品挑出,从药材性状,显微特征和薄层色谱方面进行了实验鉴别,其鉴定结果如下: Panax notoginseng is a valuable medicinal material. At present, in the medicinal material market, Panax notoginseng is used as a medicinal material. It is found that a certain proportion of other medicinal materials are mixed with rhizomes. After simple processing, it is very similar to Panax notoginseng. It is mixed into Panax notoginseng for sale. The dry root of the plant Panax notoginseng (Burk.) FHChen. Has the effect of stopping bleeding and stinging, swelling and pain. In order to ensure the accuracy and safety of medication, we pick out the counterfeit products from Sanchi, from The medicinal properties, microscopic characteristics and thin-layer chromatography were identified experimentally. The identification results are as follows: