The 2009 International Symposium on Emergency Management 2009 (ISEM'09 )was hosted by the Emergency Management Research Committee of Chinese Society of Optimization, Overall Planning and Economical Mathematics, the Graduate University of Chinese Academy of Sciences, Institute of Policy and Management of the Chinese Academy of Sciences, Huazhong University of Science and Technology, University o fNorth Carolina at Chapel Hill, USA, Central University of Finance and Economics, Dalian University of Technology, Sichuan University, Southwestern University of Finance and Economics, Ji'nan University, and Henan Polytechnic University. Emergency Management is a hot and important research topics and gains more attention in recent years throughout the world. ISEM'09 covers all the aspects in emergency management, including Theory System, Models and Algorithms, Technology and Applications. The selection of the program was a challenging task. From more than 300 submissions the Symposium carefully selected 163 papers. In addition to th econtributed papers, the Symposium featured 15 invited talks given by senior government officers, leaders from large-scale companies, and professors from universitie sand research institutes. We would like to thanks all the authors, speakers, reviewers and participants for their significant contributions to the success of ISEM'09. Our sincere gratitude goes to all the members of the Organizing Committee for their enthusiasm, hard work an deffort in the organization of this Symposium. Finally, we hope that you will enjoy reading this volume and that it will pcrovid einspiration and opportunities for your future research.