任何查缉行动都是执法行为,而自卫不仅是为了在紧急时刻使用武器捍卫自己的生命,更重要的在于缉捕查缉对象,将其押上审判台,依法严惩。然而在实际行动中,由于警察缺乏自卫准备,造成了许多无谓的流血牺牲。本文从分析、总结大量案例着手,通过中美两国警察伤亡现状的对比,阐明自卫准备的内涵及构成要素。 Any investigation is a law enforcement act. Self-defense is not only for the purpose of safeguarding one’s life by using weapons in an emergency, but more importantly for arresting suspects, putting them on trial, and punishing severely according to law. However, due to the lack of self-defense preparedness by the police in actual actions, many unnecessary bloodshed was caused. This article starts from the analysis and summarizes a large number of cases and compares the current situation of casualties among the police in China and the United States to clarify the connotation and elements of the preparation for self-defense.