强奸犯罪,具有明显的暴力对抗性,精斑和毛发一向是强奸案件的主要物证。随着强奸案件新的犯罪动向,幼女、少女被害越来越多,据印江县公安局对1992年31起强奸案的统计资料,受害人全是未婚女子(引自《调查·研究·决策》(1993年第3期贵州省公安厅编)为此,应充分重视血痕在强奸案件中的物证意义。罪犯强奸未婚女子导致处女膜破裂,已婚妇女外阴损伤出血,以及强奸月经期的妇女,都会将受害人的血液沾附到犯罪分子生殖器和内裤上,如果能及时发现提取血痕 Rape, obvious resistance to violence, seminalism and hair have always been the main evidence of rape cases. With the new crime of rape, young girls and teenage girls were harmed more and more. According to the statistical data of Yinjiang County Public Security Bureau on 31 rape cases in 1992, the victims are all unmarried women (cited in "Investigation, Research and Policy Making To this end, due attention should be paid to the physical evidence of bloodstains in cases of rape, the rape of unmarried women leading to the rupture of the hymen, the bleeding from vulvar wounds of married women, and the rape of women during the menstrual period, Will be the victim’s blood stained with criminals and underwear, if the timely detection of bloodstains