Abstract: The supervision and restriction of the supervisory committee is an important part of the top-level design of the supervision system reform. The status and role of the supervisory committee and the nature and function of the supervisory power call for strengthening the supervision and control of the supervisory committee and its staff. The effective experience of successful anti-corruption agencies both home and abroad shows that it is necessary to strengthen the supervision and control of anti-corruption institutions. The supervision of the supervisory committee can be internally carried out by means of organizational division, mutual supervision and internal system design, and externally by means of the news and the masses. To restrict the supervisory committee, the internal control system should be established in three aspects: reporting for instructions and approval procedures, collective decision-making and business processes. In dealing with corruption cases and political framework, other state power organs can restrict the supervisory committee.