A novel particle/metal-based monolithic catalysts dual-bed reactor with beds-interspace supplementary oxygen is constructed comprising of the upper-layer 5 wt％Na2WO4-2 wt％Mn/SiO2 particle catalyst and the under-layer 3 wt％Ce-5 wt％Na2WO4-2 wt％Mn/SBA-15/Al2O3/FeCrAl metal-based monolithic catalyst as well as a side tube in the interspaces of two layers for supplementing O2.The reaction performance of oxidative coupling of methane (OCM) in the dual-bed reactor system is evaluated.The effects of the reaction parameters such as feed CH4/O2 ratio,reaction temperature and side tube feed O2 flowrate on the catalytic performance are investigated.The results indicate that the suggested mode of dual-bed reactor exhibits an excellent performance for OCM.CH4 conversion of 33.2％,C2H4 selectivity of 46.5％ and C2 yield of 22.5％ could be obtained,which have been increased by 6.4％,4.1％ and 5.5％,respectively,as compared with 5 wt％Na2WO4-2 wt％Mn/SiO2 particle catalyst in a single-bed reactor and increased by 10.7％,31.9％ and 17.7％,respectively,as compared with 3 wt％Ce-5 wt％Na2WO4-2 wt％Mn/SBA-15/Al2O3/FeCrAl metal-based monolithic catalyst in a single-bed reactor.The effective promotion of OCM performance in the reactor would supply a valuable reference for the industrialization of OCM process.