摘要： 摘要刑事诉讼法修改后，除审查逮捕时的羁押必要性审查外，捕后羁押必要性审查工作处于虚置状态，往往只有刑事和解的案件才在捕后变更逮捕。“程序虚置”的原因是检察机关缺乏开展工作的动力，受制于公安机关、被害人、法院以及公众舆论压力，同时也因为审查缺乏明确的羁押事实标准及证明制度，权力缺乏来自辩方的有效制约。改革的方向应当是建立检察院开展羁押必要性审查的动力机制，确立明晰的羁押事实标准，建立量化评估及证明制度，优化诉讼结构。

关键词: 羁押必要性, 逮捕, 未决羁押, 程序性证明

Abstract: After the new criminal procedure law is carried, the review of the necessity of post-arrestment custody is not fully working except on arrestment.It  violats the legislative goals of reducing the rate of pretrial-custody significantly.The reason is that procuratorial organs is lack of motivation, the work is hindered by the external pressure from the police, the victim, the court and public opinion, the review process is lack of clear standard and proof system, and the procedure is short of effective restriction from the defense.We should establish the incentive mechanism for procuratorial agencies, clear the custody standard and proof system.

Key words: The Necessity of Custody, Arrest, Pretrial-custody, Procedural proof