摘要： 对于人民警察是否能够援引刑法中正当防卫的规定使自身行为合法化，存在着职务行为说、违法区分说、个人行为说与正当防卫说四种主要立场。职务行为说原则上否定对警察行为适用正当防卫的可能性。违法区分说肯定警察行为可以构成正当防卫，但同时认为，正当防卫只能使警察行为在刑法上合法化，不能排除其在行政法上的违法性。个人行为说主张，警察防卫只能被视为人民警察以个人身份实施的防卫行为。正当防卫说则认为，构成正当防卫的警察行为不仅在刑法上合法，在行政法等其他公法中也同样合法。相对于其他三种学说，正当防卫说是更为有力的见解。其不仅有利于贯彻法秩序统一性原则，在刑事政策上也最为令人满意。

关键词: 警察防卫, 正当防卫, 法秩序统一性, 法律保留

Abstract: There are four main positions on whether police can invoke the provision of self-defense in criminal law to legalize their own behavior: duty behave theory, distinction theory, personal behave theory and justified defense theory.The duty behave theory denies in principle the possibility of applying self-defense to police actions; it is affirmed by distinction theory that the action of police can constitute self-defense, however it is believed that self-defense can only legalize police behavior in criminal law yet cannot exclude its illegality in administrative law; it is claimed by personal behave theory that police defense can only be regarded as a defense act carried out by police in their personal capacity; according to the justified defense theory, police acts constituting self-defense are not only legalized in criminal law, but also in administrative law.Compared with the above three other theories, this article explores that the justified defense theory is more convincing.

Key words: Police Defense, Self-defense, The Unity of Legal Order, Reservation of Law