The　effects　of　powder,　sintering　atmosphere　and　sintering　temperature　on　pore　radius　and　permeability　of　porous　support　were　investigated.　The　formation　process　of　the　support　layer　using　metal　powder　was　obtained.　Results　show　that　the　average　particle　size　of　initial　powder　is　＞=　100　mu　m　and　the　support　layer　is　sintered　at　1150-1300　degrees　C　for　2　h.　Ring　tensile　results　show　that　tensile　strength　of　H-2　atmosphere　sintered　sample　is　87.56　MPa　while　that　of　an　activation　atmosphere　of　H-2　with　0.2　wt%　NH4Cl　addition　sintered　sample　is　115.20　MPa,　which　is　enhanced　by　30%.　The　effects　of　sintering　temperature　on　mechanical　properties　of　porous　support　were　also　investigated.　The　relationship　between　density　of　porous　support　and　mechanical　properties　was　obtained.　The　relationship　could　be　used　to　forecast　the　strength　of　porous　materials　by　testing　density　of　porous　materials.