The invention discloses a foamed basalt material and a manufacturing method. The foamed basalt material is prepared from the following main raw materials in proportion: basalt ores, fly ash, waste glass powder, alumina, a foaming agent, a fluxing agent, a foam stabilizing agent, a dispersant and auxiliary materials. The foamed basalt material is prepared through the following steps: raw material treatment, ball milling and crushing, batching and mixing, drying and powder preparation, foaming and product formation, cutting and molding, etc. The basalt foamed building decorative material prepared by using the method provided by the invention is a material which has excellent performances, is non-toxic and non-radiation, has low heat conductivity coefficient, good thermal insulation properties, stable chemical properties, good fire resistance and high compressive strength and shear strength, and fully meets the requirement for project quality. The main raw material basalt in the invention is a volcanic rock, has wide mineral reserve distribution in China, is easily available and has low cost, so the obtained foamed basalt material has high cost performance. The foamed basalt material provided by the invention can be used as a basic material used for building construction or building decoration, can be made into building bricks or building boards, and has environment-friendly effect in manufacturing and application.