The preparation of an Inconel 625 porous material via powder sintering was studied. The typical pore characteristics of the Inconel 625 porous material were analysed and characterized through 3D-CT modelling. The effects of different sintering temperatures on the properties of the Inconel 625 porous material, such as morphology, porosity, maximum pore diameter, and air permeability, were studied. The tensile test results at room temperature reveal that the tensile strength gradually increases with increasing sintering temperature. When the sintering temperature is 1 250 ℃, the tensile strength of the Inconel 625 porous material reaches 224 MPa. The high-temperature tensile results of the Inconel 625 porous material indicate that with increasing test temperature, the tensile strength decreases, whereas the plasticity increases.