监察委有权采取留置措施是本次监察体制改革的一大特色。留置措施有别于司法强制措施和行政强制措施，是一种取代“双规”的新型强制调查措施，具有强制性、主动性、程序性、谦抑性等特征。监察委行使留置措施过程中涉及的问题众多，范围非常宽泛，囿于篇幅，本文对留置措施的研究主要集中在留置措施运行和监督中存在的重大理论和实际问题。主要研究内容包括留置措施的应然属性、运行要素，在启动、执行、解除、延期、公示等不同阶段的程序和实体问题，以及用权力和权利对留置措施进行监督等问题。上述这些重大理论和实际问题涉及留置措施的基本方面、主要领域和热点问题，彼此紧密联系、相互影响、互相促进，对这些理论和现实问题进行研究，不仅能深化对监察体制改革的认识，而且直接关系到留置措施的整体运行情况和实际效果，关系到监察体制改革完善的方向和方式，对推进监察体制改革和留置措施问题理论创新和实践进步具有重要意义，因此成为本文研究的关键问题。 为防止留置措施被滥用，肆意侵犯公民合法权益，应当将留置措施的运行纳入法治轨道，采取多种措施规范其运行。有权采取留置措施的法定机构只能是监察委；留置措施的适用对象、案件类型和适用期限必须明确具体；留置措施的启动、审批、执行、讯问、公示、解除和延期必须严格遵循法定原则；应提高监察官和监察辅助人员的整体素质，严格准入门槛，完善考核制度；完善监察机关和公安机关的配合衔接，完善记录纪实和案卷交接制度，以确保留置措施各环节的规范化运行；留置期间应当折抵刑期。留置措施对人身自由具有很强的限制性，如果不进行监督，极易发生权力滥用行为，滋生新的腐败。我们可以通过权力监督和权利监督两种方式，对留置措施的运行进行监督和制约。 本文在内容上共设置五章，其主要结构如下：第一章，导论。本章作为论文的开篇，主要对监察委留置措施的研究背景、意义与缘起，研究现状和特点和研究方法进行说明，目的在于清楚阐述本文的基本情况，为后文的分章论述奠定基础。第二章，留置措施的概念、性质和特征。这一章起“总论”的作用，立纲挈领，统领全文，主要对留置措施产生的背景、概念、性质特征等基础性问题等进行探讨。设置这一部分的目的是对全文要讨论的主题和问题进行界定，起到立论的作用，同时也为后边的写作做好铺垫。第三章，留置措施运行。这一章是本文的重要内容，集中探讨留置措施的运行要素、启动、执行、解除、延期、折抵刑期等问题。本章选取的问题都是目前争议较多而又研究相对较少的基础性问题，具有重大实践意义和理论价值，因而纳入本章的研究范围。第四章，留置措施运行的监督。这一章也是本文研究的核心问题，是是本文的重点，也是论文的收尾。主要研究留置措施运行中的监督问题，重点从权力监督和权利监督两个方面进行探讨。权力监督方面主要涉及立法监督、司法监督、执政党监督和监察委内部监督等问题；权利监督方面分为留置对象的权利监督和非留置对象的监督，前者涉及留置对象的会见律师权、知情权、申诉、控告权等，后者涉及人民群众监督、民主党派监督和新闻舆论监督等问题。这些问题理论性和实践性很强，是不少学者关注的热点问题，极有研究价值。第五章，结语。对全文的内容做一简要回顾和总结，对监察体制改革和监察委留置措施的未来发展和完善进行展望。 关键词：监察委员会；留置措施；运行程序；留置监督；律师会见权

Supervision committee getting the right to adopt detention measures is a great feature of the structural reform of supervision system. Detention measures, different from judicial enforcement measures and administrative coercive measures, is a new kind of mandatory investigation measures. It is featured by mandatory, Initiative, procedural and restraining principle. The range of application of detention measures supervision committee implemented is great. It covers a huge amount of problems. This paper focuses on the major theoretical and practical issues existing in the operation and supervision of detention measures. The main research contents include the procedural and substantial issues of necessary attributes and operating elements of detention measures in the stage of initialization, enforcement, termination, postponement and publicity, and the supervision of detention measures with power and rights. The above major theoretical and practical issues cover the basic aspects, primary fields and hot issues of detention measures. These issues have a close relationship. They affect and promote each other. Doing research on the theoretical and practical issues can not only deepen the understanding of the supervision structural reform but also exert an direct influence on the overall operational condition and real effect of detention measures. It can also affect the direction and mode of the way to perfect supervision structural reform. The research of these issues has a great significance on the theoretical innovation and practice progress of supervision structural reform and detention measures. In order to prevent detention measures from being abused and infringing civil legitimate rights and interests willfully, it is supposed to bring the operation of detention measures into the law orbit, and adopt various measures to regulate its running mechanism. The statutory body which has the right to implement detention measures can only be Supervision Committee. The applicable object, case type and time limit of detention measures must be clearly stipulated. The start, examination and approval, execution, interrogation, publicity, relief and postponement of detention measures must be applied with strictly following the principle of legal prescription. In order to guarantee the standardized operation of detention measures, it is supposed to improve the overall quality of Censors and auxiliary censors, strict the entry threshold, improve the appraisal system, perfect the cooperation and convergence between supervisory organ and public security organ, and detail the record and the transfer of case files. The period of detention should be offset against certain term of imprisonment. Detention measures have a strong restraint of liberty. It is easy to generate the abuse of power and give rise to corruption without supervision. Power supervision and right supervision can be resorted to supervise and constraint the operation of detention measures. There are five chapters in the paper. Chapter one: Introduction. As the beginning of the paper, it gives an illustration of the background, significance, reason, research status, features and methods of detention measures. It aims to give a clear exposition of this paper, and lay a foundation of the discussion in each chapter. Chapter two: the concept, property, and features of detention measures. As a lead, chapter two gives a discussion of the basic issues of detention measures, such as the background, concept, features, and the operating elements of detention measures. This chapter aims to make a demarcation between the theme and issues of this paper. It can not only put forward a contention, but also pave the way for the following discussion. Chapter three: the operation of detention measures. As the important part of this paper, it focuses on the initiate, implement, termination, postponement and subtraction of prison term of detention measures. The issues this paper discussed are the basic ones which has great controversy but less research. So the discussion of these issues has significant practical meaning and theoretical value. Chapter four: supervision on the operation of detention measures. This is the core and focus of the paper. As for the supervision on detention measures, it mainly includes the supervision of the power and the rights. The supervision of power refers to legislative oversight, judicial supervision, governing party’s supervision and internal supervision in the supervision committee, while the supervision of the rights includes the supervision of the rights of detention person and non-detention person. The former includes detention person’s rights to meet with defense counsel, to be informed and to appeal and sue, while the latter refers to the masses' supervision, Democratic Party’s supervision and press supervision. Being of highly theoretical and practical significance, all these issues have gained the great attention of many scholars. Chapter five: epilogue. It makes a review and summary of the whole content, and makes expectation about the future development and improvement of supervision structural reform and the detention measures of supervision committee. KEY WORDS: Supervision committee, Detention measures, Operation procedure, Supervision of detention, Right to meet with defense counsel