Abstract: In order to promote the application of metal tantalum(Ta) in the fields of electronics, military, medical devices, aerospace and chemical engineering, the porous Tamembrane was prepared on the surface of Ta foil by the process of spraying combine sintering.Subsequently, the composite membrane(Pd/porousTa/Ta) was prepared by electroless Pd plating processeswhich using porous Ta/Ta as the composite substrate. The surface morphology shows that the sintering temperature has a significant impact on the structure of porous Tamembrane. The porous Ta membrane with well-developed sintering neck can be obtained after sintering at 1700oC for 2 hours.The electroless plating time has a significant effect on the Pdmembrane on the surface of porous Tamembrane. Due to the complex surface structure of porous Tamembrane,causedit was difficult to obtain uniform and dense Pdmembrane on the surface of porous Tamembrane..