The invention relates to a light foamed ceramic wall building material with iron tailings as a main raw material and a production process thereof. The light foamed ceramic wall building material can be used for replacing traditional wall materials and thermal insulation materials. Iron tailings are adopted as the main raw material of the building material provided by the invention, quartz, calcite, sodium carbonate, borax, alumina and a foaming agent are configured, the ball milling time of raw materials in the production process is about 10h, the fineness is 300 meshes, a roller kiln is selected in the sintering process, the sintering period is about 6h, and the sintering temperature is about 1030 DEG C. The successful development of the building material of the invention is a technological revolution of building wall materials, which can greatly reduce the cost of building walls, reduce the labor intensity of workers, reduce the overall weight of buildings, reduce the basic load of the buildings, and meanwhile, achieving such targets of buildings as lightweight, thermal insulation, sound insulation, moisture resistance, and the like, and meeting the current environment-friendly, non-pollution and energy-saving requirements of modern buildings.