PURPOSE: To easily and efficiently manufacture the refractory metal matrix composite having high strength in an axial direction by adding short fibers and a bond to refractory metallic powder, kneading the above, extruding the obtd. extruding stock from a nozzle of an extruding machine and executing sintering.

CONSTITUTION: Extruding stock 3 prepd. by adding reinforcing short fibers 2, a bond, a solvent or the like to refractory metallic powder and kneading the above is housed in the body 1a of an extruding machine 1. As the above refractory metals, W, Mo, Ta, Nb or their alloys are used, and the above short fibers are also formed from the above metals, alloys or the like. Furthermore, as the above bond, methyl cellulose or the like are used in the addition amt. of about 1 to 6% together with a solvent such as water. The above extruding stock 3 is pressurized to about 20 to 200kg/cm2 by a pressurizer 5 and is extruded from an injection hole 6 of a nozzle 4 to mold a molded product 7. After that, the molded body 7 is sintered after the removal of the bond or the like therefrom by volatilization. In this way, the refractory metal matrix composite constituted of a sintered body in which short fibers are fibrously arranged in an axial direction and are dispersed into a metallic matrix can be obtd.