A method for manufacturing a medical porous metal material. Tantalum powder, polyvinyl alcohol, and sodium hydrogen carbonate are mixed to form a powder mixture, then, same is compressed at 50 to 100 MPa into an organic foam to undergo the processes of molding, degreasing, sintering, cooling, and heat treating to acquire a porous tantalum material. The sintering is done with a degree of vacuum 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 between 200°C and 300°C, 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, and heated to a temperature between 2000°C and 2200°C at a rate of 5 to 10°C/min. The heat treating is done with a degree of vacuum between 10-4 Pa and 10-3 Pa, heated to a temperature between 800°C and 900°C at a rate of 10 to 20°C/min, kept warm for 240 to 480 min, then cooled to 400°C at a rate of 2 to 5°C/min, kept warm for 120 to 300 min, and then cooled along with the furnace to room temperature. Tests show that the material is provided with an impurity content of less than 0.2%, a porosity between 30% and 38%, pore diameters between 30μm and 50μm, an elastic modulus between 6.0 GPa and 7.0 GPa, a compressive strength between 150 MPa and 170 MPa, and is highly applicable for use in a dental bone-substituting medical implant material.La présente invention se rapporte à un procédé de fabrication dun matériau métallique poreux médical. La poudre de tantale, lalcool polyvinylique et lhydrogénocarbonate de sodium sont mélangés afin de former un mélange poudreux ensuite, ce dernier est comprimé à une pression de 50 à 100 MPa dans une mousse organique pour subir les procédés de moulage, de dégraissage, de frittage, de refroidissement et de traitement thermique pour acquérir un matériau à base de tantale poreux. Le frittage est réalisé avec un degré de vide de 10-4 à 10-3 Pa, chau
