色彩可辨识中药的质量，例如黄连，除了根条粗壮，质地坚实，味道大苦等特点是鉴别优质黄连的依据外，而黄连折断面呈现出来的色彩越黄，则黄连的质量越高，故也是确定黄连优劣的一个依据。以色彩辨别中药属于传统的方法，如红花池水后，水就成了金黄色；苏木投入热水中，水就 Color can identify the quality of traditional Chinese medicine, such as berberine, in addition to the thick roots, solid texture, taste great bitter taste and other characteristics is the basis for identification of high quality berberine, and the more yellow the Huanglian folding section shows, the higher the quality of berberine, so It is also a basis for determining the quality of Coptis. The use of color to identify traditional Chinese medicine is a traditional method. For example, after drinking water from a safflower pond, the water becomes golden yellow;