目的:观察半夏与易混淆物水半夏的性状鉴别特点及不同方法鉴别的应用价值。方法:对半夏及水半夏实施性状鉴别,另利用紫外光谱及薄层色谱分别对其进行鉴别,分析二者差异。结果:半夏及水半夏在上端、下端及块茎性状方面存在及较大差异,半夏多为类球形,而水半夏多为圆锥形、椭圆形;利用薄层色谱检测半夏出现斑点数为4个,而水半夏为8个;利用紫外吸收光谱检测发现半夏在水中的吸收峰低于水半夏。结论:半夏多为类球形,且含精氨酸,在水中的吸收峰较水半夏低。 Objective: To observe the traits of Pinellia ternata and easy to confuse the characteristics of identification of Pinellia ternata and different methods of identification of the value. Methods: The performance of Pinellia ternata and Pinellia ternate were identified, and the differences were also identified by UV and TLC respectively. Results: Pinellia ternata and water Pinellia had more and more differences in the upper, lower and tuber traits. Pinellia ternata was mostly spherical, while the water was mostly conical and oval in shape. The number of 4, while the water Pinellia for 8; using UV absorption spectroscopy found that the absorption peak of Pinellia in water was lower than Pinellia. Conclusion: Pinellia mostly spherical, and contains arginine, the absorption peak in water is lower than the water Pinellia.