介绍2个案例，说明法医毒物分析在为侦查破案提供线索、为案件定性提供证据以及为急救采取的措施提供依据等方面的重要性；指明法医毒物分析的难点是被分析的物微量和从生物样品中提取被分析物过程中的蛋白质和脂肪去除困难；认为中国法医毒物分析水平、部分分析技术处于发达国家20世纪末的水平，但标准化管理滞后。今后毒物分析发展要根据国家的实际需要并瞄准世界先进水平。

This article introduces two cases, in which the result of toxicological analysis provides the important clue to investigator and the evidence to the justice for one case, while the result of toxicological analysis provides the basis for emergency treatment methods for another case. The article introduces two problems of toxicological analysis during the extraction. One is the microanalysis, and the other is how to clear out the protein and fat from biological material. The article thinks that the present level of toxicological analysis for some techniques in China is near that of the developed country in the end of the 20th century, but the standard management is China lags behind. In the future, the development of toxicological analysis should be in accordance with domestic reguirement and aimed at new techniques in the world.