The invention belongs to the field of preparation of copper-based composite materials for welding electrodes, and discloses a nano zirconium carbide ceramic reinforced copper-based electrode materialand a preparation method thereof. The preparation method comprises the following steps: heating uniformly mixed Cu-Zr-C powder in a high-temperature tubular atmosphere furnace to 1250 DEG C to obtainCu-containing nano ZrC powder, then melting a mixture of oxygen-free copper and the Cu-containing nano ZrC powder in a vacuum melting furnace, and carrying out magnetic stirring, so as to prepare thenano zirconium carbide ceramic reinforced copper-based electrode material. The method disclosed by the invention has the characteristics of low cost, simple process, high production efficiency, high degree of ZrC nano crystallization and uniform distribution.