The invention discloses an electrode for applying pulse current to a continuous casting tundish. The electrode is characterized by comprising a cone frustum shaped fireproof material (2) and an electrode distribution plate (3) embedded into the fireproof material (2); a plurality of rod-like small electrodes (4) are vertically distributed on the surface of the electrode distribution plate (3); the rod-like small electrodes (4) pass through the cone frustum shaped fireproof material (2), and the ends of the rod-like small electrodes (4) are naked on the surface of the cone frustum shaped fireproof material (2) and connected with molten steel; the bottom end of the electrode distribution plate (3) is provided with a pulse current connecting end (1); and the pulse current connecting end (1) passes out of the bottom end face of the cone frustum shaped fireproof material (2) and is connected with a pulse power supply. The electrode has the advantages of strong high-temperature oxidation resistance and molten steel melting resistance, long service life, good conductivity, simple and feasible operation in a pulse processing process, safety and reliability.