目的:提供1种老鹳草类药材鉴别的新方法。方法:应用紫外谱线组法,测试9种老鹳草在4种不同溶剂中的紫外吸收光谱。结果:9种老鹳草的紫外谱线组图谱、最大吸收峰数目及峰位值具有明显差异。结论:该法简便、准确、灵敏,可鉴别9种老鹳草,应用紫外谱线组法鉴别中药材易混品种是科学可行的。 Objective: To provide a new method of identification of geranium medicinal herbs. Methods: The ultraviolet absorption spectra of nine species of geranium in four different solvents were tested by ultraviolet spectral line method. Results: There were significant differences in the ultraviolet spectrum of nine species of geranium, the maximum number of absorption peak and the peak value. Conclusion: The method is simple, accurate and sensitive, and can identify nine species of geraniums. It is scientifically feasible to identify the mixed varieties of Chinese herbal medicines by UV spectral line method.