The metal microporous filtration material is made of irregular stainless steel powder processing ,formed by isostatic pressing, molding, extrusion molding. It has good permeability filtration performance and high filtration precision, and a certain strength and toughness, can be used under the high temperature of 300 ℃. It is mainly applied in the basic industries such as petroleum, chemical industry, environmental protection, as the filter material, porous electrode materials, sound-absorbing materials, damping materials, divergent cooling material, catalyst and catalytic materials, antifreeze and cushioning material.