In the investigation,a porous micro-channel composite structure was designed and prepared.First,thecopper particles were sintered together with the base at high temperatures to form a porous layer structure of certainthickness.Then,a micro-channel structure of certain depth was made on the porous layer through wire-electrodecutting.The micro-channel structure is not only able to increase the surface area of sintered porous layer whenboiling but also provide steam channels to ensure the steam to escape when resistance becomes less,thus helpingbubbles go out easily.Meanwhile,when liquid is boiling violently,micro-channels can provide gas-liquid twophasechannels,thus separating gas with liquid.Finally,the influence of such key parameters as micro-channelnumber,micro-channel angle and micro-channel width and depth on the boiling heat-transfer performance wereanalyzed.Experimental results indicate that the more the micro-channel numbers and the larger the micro-channeldepth are,the more contact area of gas-liquid interface will bring about better enhanced boiling heat-transfer effect.