To achieve well-organized combustion in mesoscale combustors, the mass flow and Reynold boundary of surface-stabilized flame on a porous media in an annular mesoscale channel was studied experimentally with methane-air premixture. The porous media is composed of sintered metal powder. The combustion was carried out in the mesoscale annular channel formed by a quartz glass tube,a stainless steel tube and the porous media. The experimental results indicate that the flame in the annular channel evolves from su...