Methods: Infrared spectroscopy and compare software were used to distinguish the different Niuxi,and simulation testing were used to observe calefactive stability.

• 方法:采用红外光谱技术结合计算机辅助比对软件技术,对牛膝药材贮存过程中的药材质量的变化进行了比较研究,并对牛膝药材的热稳定性进行了模拟实验。