警察圈套是各国刑事诉讼中大量使用的侦察手段,而我国刑事法律缺乏相应的规定。本文探讨了警察圈套的合法性及构成要件,以及由此产生的对警察圈套的抗辩及抗辩成立后诱使者的相应责任,以求对认识警察圈套有所帮助。 Police snares are widely used reconnaissance methods in criminal proceedings of various countries, and our criminal law lacks corresponding provisions. This article explores the legitimacy and constitutional requirements of the police trap, as well as the resulting defense of the police trap and the corresponding responsibility of the messenger after the defense is established, so as to help the police know about the police trap.