2012年新修订的《刑事诉讼法》明确规定了警察出庭作证制度,从此警察出庭作证从过去的偶尔将变成一种常态化机制。由于警察对出庭作证的认识不到位、相关知识和经验的欠缺严重影响了侦查人员出庭作证的效果,本文从警察出庭作证的种类、出庭作证的准则、出庭作证的具体技巧三个方面进行阐述,以期对实务部门有所帮助。 The newly revised Criminal Procedure Law of 2012 clearly stipulates the system of police testifying in court. From then on, the testimony of police in court will occasionally become a normalization mechanism. Because the police did not know enough about testifying in court, the lack of relevant knowledge and experience seriously affected the investigators’ effectiveness in court testimony. This article elaborates from the following three aspects: the types of police testifying in court, the rules of testifying in court and the specific techniques of attending court testimony, In order to help substantive departments.