上城区是杭州市的政治、经济、文化活动中心,社会治安形势历来比较复杂,因其所处的地理位置,近年来成了该市案件的高发区和流窜犯罪的重点侵袭区。近三年抓获的外来流动人口犯罪占到总量的80%以上,且深夜作案高达79.6%。面对严峻的动态犯罪新形势,仍沿用静态环境下的公安工作模式和手段,在斗争的实践中不仅案件破不胜破,而且明显感到原有的打防机制力不从心。如何改变被动的局面,争取公安工作的主动权,建立有效的打防机制,成了迫在眉睫的问题。分局从1995年初开始,经认真的调查分析,认为在开放的劝态环境下,只有建立“以动制动,以快制快”的防范打击犯罪机制,才能变被动出击 Shangcheng District is the center of political, economic and cultural activities in Hangzhou. The situation of social order has always been complicated. Due to its geographical location, it has become a high-incidence area of ​​criminal cases and a crime-infringing area in recent years. In the past three years, the number of migrants caught in the floating population accounted for more than 80% of the total crime, and up to 79.6% were committing late-night crime. In the face of the severe new situation of dynamic crime, police still use the working mode and means of public security in a static environment. Not only is the case unbreakable in the practice of struggle, but it also obviously feels that the original system of preventing and fighting the armed forces is inadequate. How to change the passive situation, strive for the initiative in public security work, and establish an effective anti-defense mechanism has become an imminent issue. Since the beginning of 1995, the sub-bureau has conducted serious investigations and analyzes, believing that under the environment of persuasion and opening up, it is only by establishing a mechanism of guarding against crime that can prevent the criminalization mechanism from becoming “passive and quick”