证人拒绝作证已影响案件的正常侦查,是造成案件侦破效率不高的原因之一。侦查阶段证人拒绝作证既有法律制度缺陷方面原因,也有证人主观因素。从保护证人制度的健全,明确对拒绝作证行为的处罚,提高侦查人员办案水平等方面入手,可以有效解决当前侦查工作面临的困局。 Witness refuses to testify has affected the normal investigation of the case, which is one of the reasons for the detection efficiency of the case is not high. In the investigation stage, witnesses refuse to testify both the defects of the legal system and the witness subjective factors. From the aspects of protecting the witness system, clarifying the penalty of refusing to testify, and improving investigators’ handling of cases, the current investigation work can effectively solve the predicament.