A method for manufacturing a medical porous metal material for substituting of a load-bearing bone tissue. Tantalum powder, a pore-forming agent, and a molding agent are mixed, and then the powder mixture is compressed into an organic foam to undergo molding, degreasing, sintering, cooling, and heat treating. The degreasing is done by gradually heating to a temperature between 400°C and 800°C at a rate between 0.3°C/min and 2°C/min, argon is introduced to constitute a protective atmosphere, and kept warm for 300 min to 360 min. The sintering is done between 10-4 Pa and 10-3 Pa, heated to a temperature between 1500°C and 1800°C at a rate of 10 to 20°C/min, kept warm for 120 to 240 min, cooled along with a furnace to a temperature between 200°C and 300°C, then heated to a temperature between 1500°C and 1800°C at a rate of 10 to 20°C/min, kept warm for 180 to 240 min, heated to a temperature between 2000°C and 2200°C at a rate of 5 to 10°C/min, and kept warm for 120 to 360 min. Tests show an impurity content of less than 0.2%, a density between 5.00g/cm3 and 6.67g/cm3, a porosity between 60% and 70%, pore diameters between 200μm and 400μm, an elastic modulus between 3.8 and 4.2 GPa, a flexural strength between 120 MPa and 150 MPa, and a compressive strength between 72 MPa and 90 MPa. This effectively solves the contradiction between a requirement for increased porosity and that for great mechanical properties of the medical porous tantalum material as a substitute for load-bearing parts.La présente invention se rapporte à un procédé de fabrication dun matériau métallique poreux médical destiné à la substitution dun tissu osseux supportant une charge. La poudre de tantale, un agent porogène et un agent de moulage sont mélangés et, ensuite, le mélange poudreux est comprimé dans une mousse organique pour subir un moulage, un dégraissage, un frittage, un refroidissement et un traitement thermique. Le dégraissage est réalisé en chauffant petit à petit à une température dans
