中医药是我国优秀的遗产 ,近处来有些中药临床效果不理想。现将有关影响中药临床疗效的因果及防范措施作一粗浅剖析。1　药材品种及质量因素1 1　药材品种不纯　部分药商及药材公司 ,利欲熏心 ,购入掺假药材。如黄芪饮片中掺有锦葵科植物蜀葵的根的饮片 ;参三七中混有水三七、 Chinese medicine is an outstanding heritage of our country. Some clinical medicines in the vicinity have not been as effective as ours. Now we will give a brief analysis of the causal effects and preventive measures that affect the clinical efficacy of Chinese medicine. 1 Variety and Quality Factors of 1 1 Medicinal Materials Impurity of Some Medicinal Herbs and Medicinal Herbal Medicine Companies, Led to Smoke, Buying Adulterated Medicinal Herbs. For example, a slice of the root of a malvaceae plant, Amaranthus radix, is mixed into a slice of Radix Astragali;