A method for manufacturing solid cored-wires made of high purity calcium metal is characterized by comprising the following operating steps: (1) manufacturing calcium metal into calcium metal pumps; (2) processing calcium wires; and (3) synchronously drawing the calcium wires. The invention manufactures the calcium steel common core wires closely integrating inner solid cored-wires made of calcium metal and an outer steel jacket. The calcium steel common core wires do not have the problem of calcium oxidation, thus the shelf life can be prolonged by 3-5 years. The wires are standard in diameter, uniform in density and accurate in measurement. The thickness of the outer steel jacket is 1-2mm which is about 3 times that of the steel strips for the existing products. The outer jacket has high strength, thus avoiding broken wire accidents. The thickness can ensure the product to enter and melt near the ladle bottom plate in the molten steel under the temperature over 1600 DEG C. The calcium reacts in the deep part of the molten steel, the molten steel is fully processed, less calcium is lost and the calcium absorption rate is high. The solid cored-wires are made of electrolytic calcium metal with purity of 99% and have high purity, less impurities and high calcium absorption rate.