犯罪现场勘查是大多侦查工作的起点,也是提取犯罪痕迹物证的主要场所,犯罪现场勘查工作在刑事侦查工作中占有非常重要的地位。因此,错案的发生往往与犯罪现场勘查工作的质量有或多或少的联系。在此我想以一个实践工作中的错案为例引出今天的问题。1999年7月的一天,某市公安局接报案:有一名中学生王某(女,17岁)被杀死在家中,一侧乳房被割下,不知去向,部分财物被抢。通过现场勘验和现场访问,当地公安机关认为案发当天在被害人家留宿的张某具有重大犯罪嫌疑,经过对其5昼 Crime scene investigation is the starting point of most of the investigation work, but also the main venue for the extraction of evidence of crime marks, crime scene investigation in criminal investigation occupies a very important position. Therefore, the incidence of miscarriage is often associated with more or less the quality of crime scene investigation work. Here I would like to use the wrong case of a practical work as an example to introduce the issue today. One day in July 1999, a city public security bureau received a report: a high school student Wang (female, 17 years old) was killed at home, one side of the breast was cut off, I do not know where to go, some of the property was robbed. Through on-site inspections and on-site visits, the local public security authorities believe that Zhang, who lives in the victim’s house on the day of the crime, has a major criminal suspect and after 5 days