NOVELTY - A metal porous body is manufactured by manufacturing slurry containing thermoplastic resin; applying slurry to foamed resin form surroundings; removing slurry remainder; evaporating dispersion medium and fusing thermoplastic resin powder to form fusion layer; frame formation process where metal powder crosslinks fusion layer to form a frame; re-applying and removing slurry remainder on obtained frame by gaseous spray-on; evaporating dispersion medium and fusing resin powder to form another fusion layer; frame multilayering process; precursor heating process; and sintering process.    USE - Manufacture of metal porous body for filters such as water treatment filters for removing soot contained in exhaust gas of diesel engines (e.g. motor vehicle), sewage, industrial water; and for components for catalyst support of fuel cell.    ADVANTAGE - The method manufactures metal porous body with high mechanical strength.    DETAILED DESCRIPTION - Metal porous body is manufactured by:    (A) slurry manufacturing process where slurry containing thermoplastic resin powder with average particle diameter (less than or equal to 10 mu m) in dispersion medium is manufactured;    (B) applying slurry to foamed resin form surroundings with 90% porosity and 5-30 cells that defines average number of objects that intersect a straight line with 25 mm length in arbitrary direction;    (C) removing slurry remainder on foamed resin surrounding;    (D) evaporating dispersion medium and fusing thermoplastic resin powder to form fusion layer;    (E) frame formation process where metal powder crosslinks fusion layer to form a frame on resin form surrounding;    (F) re-applying slurry and removing slurry remainder on obtained frame by gaseous spray-on;    (G) evaporating dispersion medium and fusing resin powder that forms another fusion layer;    (H) frame multilayering process where obtained frame is multilayered;    (I) precursor heating process of obtained precursor from multilayering process and removing resin form and fusion layer;    (J) and sintering process where metal powder is sintered to form metal porous body.