一、引言毛发是法庭科学中常见的物证之一，在一些凶杀案、强奸案中由于格斗、撕打，常造成毛发暴力性脱落；另外，案犯在犯罪实施过程中由于心情紧张，情绪激动也能造成毛发脱落，所以现场勘查常能搜寻到案犯遗留的毛发，因此毛发分析鉴别对法庭科学具有特殊的意义。近年来， I. Introduction Hair is one of the common evidences in forensic science. In some homicides and rapes, fighting and tearing often lead to violent loss of hair. In addition, criminals often feel violent and emotionally impaired in the process of committing crimes. Can cause hair loss, so the site investigation can often find the hair left behind by the perpetrator, so the identification of hair analysis of forensic science has a special significance. In recent years,