The invention discloses a magnesia-zirconia eutectic side hole material for a submersed nozzle. The magnesia-zirconia eutectic side hole material is prepared from the raw materials of magnesia-zirconia powder, graphite powder, fused silica powder, monatomic silicon powder, silicon carbide powder, boron carbide powder, powdered resin and liquid resin, wherein the granularity of the magnesia-zirconia powder is not greater than 1mm; the magnesia-zirconia powder is prepared from 94 to 98 percent of MgO and 2 to 6 percent of ZrO2; the granularity of the graphite powder is not greater than 100 meshes. The magnesia-zirconia eutectic side hole material provided by the invention has relatively high resistance to oxidation, high thermal shock resistance, high anti-erosion property and resistance to slag corrosion; the submersed nozzle made of the magnesia-zirconia eutectic side hole material has high mechanical strength, the service life of the submersed nozzle can be prolonged greatly, and the continuous steel casting operation efficiency is increased; meanwhile, a tire cord steel billet is prevented from being broken easily in a wire drawing process of a produced tire cord steel billet, and the phenomena of impurity adhesion and blockage on the inner wall of the submersed nozzle can be prevented effectively.