The invention discloses a heat-state semi-dry method spraying material for a mixer furnace. The spraying material contains bauxite, silica fume, 95 magnesia and soft clay, wherein the 95 magnesia is 200-mesh fine powder; the mass ratio of the silica fume to the 95 magnesia to the soft clay is 3 to (6-9) to (3-6), and the ratio of the total mass of the silica fume, the 95 magnesia and the soft clay to the mass of the bauxite is (2-18) to (82-88); and the bauxite is formed by mixing a bauxite aggregate with the particle size of 0.21mm-5mm with 200-mesh aggregate powder in a mass ratio of 64 to (18-24). An application result shows that the heat-state semi-dry method spraying material has a good adhesion property, and the rebound rate is lower than 3%; the moisture in the material is greatly volatilized due to unconcentrated heating, so that after being sprayed for adhesion, the material does not fall, and the thickness of the material exceeds 200mm; and the spraying material has good corrosion resistance and flush resistance and can be used for more than three months after being sprayed once.