This article introduces three types of SPE s principle and its usage on the analysis of medicine separately:SPE cartridge,SPE disk and solid phase micro-extraction(SPME).

• 本文分别介绍了固相萃取的三种形式:固相萃取柱、固相萃取盘和固相微萃取的原理及其在药物分析和其他方面的应用情况。