METHODS: The Initial Average Rate Method was used to determine the stability of baicalin in the Ziqinqingre liquid,the content of baicalin was determined by orthogonal function spectrophotometry.

• 方法:采用初均速法对栀芩清热液中主要成分黄芩苷的稳定性进行研究,以正交函数光谱法测定了黄芩苷的含量。