在涉枪类等恐怖分子犯罪中,弹壳是最重要生物物证之一,这类生物检材的DNA提取和检验存在一定的难度。此外子弹击发的瞬间高温可能使得接触DNA破坏以及子弹击发过程的剧烈震动使得弹壳上粘附的细胞脱落,也导致弹壳接触DNA的有效提取难度加大,成为困扰广大检验人员的难点。本文拟通 In the gun and other terrorist crimes, the shell is one of the most important biological evidence, such biological samples of DNA extraction and testing there is a certain degree of difficulty. In addition, the instantaneous high temperature of the bullet firing may make the contact DNA damage and the violent vibration of the bullet firing process make the adherent cells on the bullet shell fall off, which also leads to the difficulty of effectively extracting the DNA contacting the bullet shell and becomes a difficult problem for the majority of inspectors. This article to pass