rehensive and prof ound analysis of the factors restricting the public security organs to improve our ability t o handle mass incidents, andstrive to achieve a breakthrough in the view, to be innovati ve in terms of content, thus contributing to the next step to carry out practical work. The fifth chapter discusses the basis of the earlier chapters, presented China's public security organs event handling mechanism to improve mass move from perfect laws and regulations, strengthen early warning network and strengthen the public security organs of group training and how to avoid repeated incidents of secondary issues research and a nalysis. Keywords: Group events; public ans; warning; mechanism 万方数据