The utility model discloses a metal porous cone, which comprises a hollow circular-cone shaped sintering metal porous cone which is made of stainless steel, titanium, nickel or nickel alloy, wherein the sintering metal porous cone surface is provided with a plurality of micropores, the upper portion of the sintering metal porous cone is a hollow circular-cone shaped upper density piece, the lower portion of the sintering metal porous cone is welded with a hollow circular-cone shaped lower density piece, the outer side of the upper density piece is welded with a flange, and the upper density piece, the sintering metal porous cone and the lower density piece form an integral cone, and are communicated inside. The metal porous cone is fixed in a conical conveying pipeline, then, gas is injected from outside, gas is evenly distributed in the cone, thereby reaching the purpose that gas leads solid material to be fluidized, and avoiding the plugging problem in the conveying pipeline.