To produce fiber reinforced metal composite wire super in mechanical properties such as strength, elasticity, etc., by impregnating fibers in an inorganic fiber bundle with metal enough into space between neighboring.

Using an apparatus equipped with an pressure vessel 10 installing an orifice 16 for introduction of an inorganic fiber bundle 1 and another orifice 17 for exiting it, a container 12 installing an orifice 14 for introduction of the inorganic fiber bundle 1 and another orifice 15 for exiting it and used to melt and store the molten metal, an ultrasonic generator means 18 to add ultrasonic vibration to the molten metal 11 in the container 12, a gas supply source 21 to supply inert gas into the pressure vessel 10 and the container 12 and transportation means 22 and 23 for pay-off and reeling of the inorganic fiber bundle 1 respectively, the inorganic fiber bundle 1 is continuously passed through the molten metal 11 by introducing the bundle into the orifice 14 and exiting it through the orifice 15.