目的　了解司法精神医学鉴定中凶杀案的案例特征。方法　对 68例凶杀案的资料进行回顾性分析。结果　以年龄在 2 0～ 4 5岁、农村分布居多 ;精神分裂症所占比例较大 ;与精神症状关系密切 ,案件发生突然 ,后果严重 ;受害人分布大多为家属近邻同事 ;丧失责任能力者偏多。结论　农村为凶杀案的高发地带 ,原因可能与对精神病人的认识、监护和防范意识不强有关 Objective To understand the case characteristics of homicide in forensic psychiatry. Methods 68 cases of homicide were retrospectively analyzed. The results of age 20 ~ 45 years old, mostly rural areas; schizophrenia accounted for a large proportion; and mental symptoms are closely related to the case of sudden, serious consequences; the victims are mostly family members near colleagues; loss of responsibility Too much. Conclusion The high incidence of homicides in rural areas may be related to the lack of awareness, guardianship and prevention of mental patients