The invention belongs to the technical field of metallurgy spare part manufacturing and particularly relates to a casting method for a steelmaking slag pot and a design process for a sand box and other production tools. According to the casting method for the steelmaking slag pot and the design process for the sand box and other production tools, the structure innovation of a steel model serves as a breakthrough, the sand box and other production tools with novel structures are designed on the basis of the structure innovation, and a design standard for manufacturing the model and the sand box is formed. By applying the casting method and the design process, the sand-iron ratio of the slag pot type casting is greatly decreased, and repeated overturning of a casting mold in the production process is avoided; and the occupied area is small, the adaptability and the production efficiency are high, and moreover the product service life is relatively long.