With the continuous increase of carbon dioxide emissions,mainly from the burning of coal and oil,the ecosystem is seriously threatened. Methane is a major component of shale gas and natural gas,and is an important feedstock for producing liquid fuels and high-value chemicals. But it is also a greenhouse gas,and the greenhouse effect of methane is 25 times that of carbon dioxide. The methane-carbon dioxide reforming technology has attracted much attention because of its simultaneous conversion of methane and carbon dioxide into syngas CO and H2. However,the sintering and aggregation of catalysts will occur during the reaction process,so the design and preparation of catalysts with excellent resistance to carbon accumulation and sintering is the key problem to be solved urgently in methane carbon dioxide reforming reaction. From the point of view of limited domain,the design of catalysts with excellent performance and their application in chemical reactions widely concerned.In this review,the research status of several kinds of confined high performance methane carbon dioxide reforming catalysts were introduced,including pore confined catalysts,core-shell confined catalysts,lattice confined catalysts,surface space confined catalysts and multiple confined catalysts.In addition,the performance of its application in reforming methane with carbon dioxide was described.Finally,the future development direction of application of confined strategy in the development of high-performance reforming catalysts was prospected. The pore-channel confinement affects the accessibility of reaction species and active center,active surface area and structural stability of the catalyst. The core-shell confinement can effectively promote the contact between the reactants and the active center and enhance the interaction with the active center. The lattice limits can effectively anchor precious metals or non-precious metals to the spatial framework of regular arrangement and improve the dispersion of active centers. Surface space confined catalysts with high specific surface area,highly ordered pore structure and mesoporous carriers with narrow pore size distribution (in the nanometer range) can provide a large number of catalytic active sites and stabilize metal nanoparticles. The multiple confinement can well limit the active center in the catalyst,reduce its exposure and improve the anti-carbon accumulation ability of the catalyst. Confined catalysts are widely used in the design and preparation of catalysts. Confined catalysts provide a constrained environment (physical or chemical) for the catalytic reaction system,which provides an idea for rational design of high thermal stability catalysts in the future.In the future,it is expected to pass the confined effect (especially surface space confinement and multiple confinement strategy) to regulate the design catalyst used in high temperature and high pressure carbon dioxide reforming of methane,and further explore the catalyst used in carbon dioxide reforming reaction mechanism (carbon dioxide is how to provide active oxygen for methane),which provides a new catalyst for the industrial application of methane carbon dioxide reforming reaction.