Evidence science is a comprehensive scientific theory and methodology which combing the method of natural science and social science to study the evidence collection, forensic service technology, ascertaining the fact of cases and the legal application. Evidence science shows an irreplaceable role on achieving rule of law and judicial justice, which also has more and more perspective on public service. In order to promote international academic exchanges and interdisciplinary studies on evidence science, the Key Laboratory for Evidence Science of Ministry of Education (China University of Political Science and Law) has hosted the first, the second and the third International Conference on Evidence Law and Forensic Science in December, 2007, July, 2009 and July, 2011. In future, the International Conference on Evidence Law and Forensic Science will be an important activity of the International Association of Evidence Science.