In response to the demand for high-temperature resistant porous metal sweating cooling materials for hypersonic weapon engines，the study focuses on nickel based high-temperature alloys. Through comprehensive control of powder particle size selection, forming, and sintering processes, a porous sweating material with uniform pore structure was prepared, and its performance was analyzed. The results show that the maximum pore size of the prepared porous sweating material is less than 21.3 μm. Tensile strength greater than 225 MPa, porosity greater than 25%; By controlling powder particle size, pressing, and sintering processes, effective control of the permeability of sweating cooling materials can be achieved within the range of 10^–13–10^–12 m²; Analyze and characterize the tensile data and fracture morphology of porous sweating materials, and confirm that their fracture mode is ductile fracture.