对甘肃产华北前胡Peucedanumharry-smithiiFeddeexWolfff.少毛北前胡P．harry-smithiivar.subglabrumShanetSheh.两种植物的根与白花前胡P．praeruptorumDunn．进行了从性状、组织特征到内在质量的对比研究，结果表明三者主成分组成一致，可进一步研究开发利用。同时观察到甘肃产白花前胡质地较次，醇浸出物含量偏低。

A comparative study on the histological and morphological characteristics and the intrinsic quality of the roots of Huabei Qianhu(Peucedanum harry-smithii)，Shaomao BeiQian hun(P.harry-smithii var.subglabrum)and Baihua Qianhu(P.praeruptorum)was carried out, Results revealed that the former two Qianhu produced in Gansu are similar to Baihua Qian hu in their main ingredients.Thus the two Qianhu are worthy for further research and develo pm ent,At the same time, it was observed that Baihua Qianhu Produced in Ganau is of inferior quality and the content of EtOH extract of its root is slightly lower than that from elsewhere in China.