2019年 1月3日，我国检察机关开启了“捕诉一体化”办案机制改革。在这一新的办案机制中，将原来分属于侦查监督和公诉两个部门的检察职能，统一由一个办案单元履行，即所谓的“一个案件办到底”。这样便避免了原来批准逮捕与审查起诉两个环节的重复审查工作，有利于提高诉讼效率，强化检察机关办案责任意识。而我国刑事诉讼法第九十五条对检察机关的羁押必要性审查职责也作了规定。在新的办案机制下，羁押必要性审查的制度效能受到一定程度的影响，对这一问题进行研究具有重要的理论和现实意义。

本文将介绍羁押必要性审查制度的概况，分析在“捕诉一体化”背景下羁押必要性审查制度会受到那些方面的冲击和影响以及应当在那些方面进行完善。文章的第一部分介绍羁押必要性审查制度的概况，对羁押必要性审查制度的概念性质以及原则介绍，之后论述我国羁押必要性性审查制度的价值和现状，最后考察域外羁押必要性审查的基本情况。在第二章讲述我国“捕诉一体化”改革的概念以及改革背景，概括“捕诉一体化”的特点。在第三章主要阐述“捕诉一体化”改革对羁押必要性审查制度的影响，从对羁押率、内设机构和办案模式的调整、羁押必要性审查主体以及改革带来风险的影响进行分析论述。在文章最后的第四章主要论述在“捕诉一体化”的改革背景下，如何从羁押必要性审查主体、工作流程、救济制度、相关配套措施的角度完善羁押必要性审查制度。

On January 3, 2019, China's procuratorial organs initiated the reform of the "integration of arrests and prosecutions" case handling mechanism. In this new case-handling mechanism, the procuratorial functions that originally belonged to the two departments of investigation supervision and public prosecution are unifiedly performed by one case-handling unit, so-called "one case to the end". In this way, the duplicate review work of the two links of approving arrest and review and prosecution is avoided, which is conducive to improving the efficiency of litigation and strengthening the sense of responsibility of procuratorial organs in handling cases. And article 95 of China's criminal procedure law also stipulates the responsibilities of the procuratorial organs in reviewing the necessity of detention. Under the new case handling mechanism, the system effectiveness of the custody necessity review has been affected to a certain extent, and it is of great theoretical and practical significance to study this issue.

This article will discuss the background of the "integration of arrest and prosecution", introduce the overview of the custody necessity review system, analyze the impact of the custody necessity review system in the context of the "capture and prosecution integration", and improve suggestions. The first part of the article introduces the summary of the custody necessity review system, introduces the conceptual nature of the custody necessity review system, as well as the principles of proportionality, continuity, independent review and power restriction, and then discusses the value of the custody necessity review system And the current situation, and finally investigate the basic situation of the necessity review of extraterritorial detention. In the second chapter, we describe the concept and background of the reform of "capture and complaint integration" in China, and summarize the characteristics of "capture and complaint integration". Chapter 3 mainly discusses the impact of the "integration of arrest and prosecution" reform on the custody necessity review system, from the analysis of the custody rate, the adjustment of internal institutions and case handling models, the custody necessity review subject, and the impact of reform on the risk discussion. The fourth chapter at the end of the article mainly discusses the suggestion for the perfection of the custody necessity review system in China under the background of the reform of "integration and prosecution". Suggestions are made from the perspective of the necessity of custody review subject, work flow, relief system, and related supporting measures.