紫草(Lithospermum erythrorthizon)为清热凉血类药,其性味甘寒,归心肝经.功效有凉血活血,解毒透疹的作用.近年来较广泛地用于临床,现就紫草在临床实践中的应用简述如下: Lithospermum erythrorthizon is a kind of heat-quenching and cooling medicine. It has a sweet and cold taste. It has the functions of cooling blood circulation and activating blood circulation. It has been widely used in clinical practice in recent years. Now it is used clinically. The application in practice is briefly described as follows: