刑事搜查作为刑事诉讼中的一种强制手段，体现着打击犯罪和保障人权之间的冲突和对立。紧急情形下的无证搜查作为刑事搜查中的例外，无法依托有证搜查的令状原则，无论在立法制度层面还是司法实践层面都相当薄弱，亟待改革完善。本文从紧急情形下无证搜查的内涵说起，介绍紧急搜查制度存在的理论基础与意义，并对我国紧急情形下的无证搜查的条件与程序进行认真的分析。在对比分析世界范围内紧急搜查制度的基础上，剖析我国紧急搜查制度程序、证据适用、救济等现状与问题，并提出相应的建议。

As a coercive measure in criminal litigation, the criminal search embodies the conflict between the action against the criminals and the protection of human rights. The warrantless searches under exigent circumstances, as an exception to the criminal search, cannot rely on the writ principles, thus it is very weak whether in legislation or judicial practice and badly in need of reform to perfect. This thesis starts with the connotation of the warrantless searches under exigent circumstances, introduces the basic theory and the significance of the emergent search system, and then analyzes the condition and procedure of our country emergency search. Based on the analysis and comparison of the world’s exigent search system, China’s current situation and problem, including procedure, evidence application, relief system and corresponding suggestions will be put forward.