The invention relates to the technical field of ferrosilicon production, in particular to self-repairing anhydrous stemming which comprises 41-45% of powder, 39-45% of aggregate, 11-14.5% of binding agent, 1.5-1.9% of antioxidant and 0.9-1.4% of plasticizer. The powder comprises silica fume, fly ash and clay, the aggregate comprises anthracite, coke powder, graphite and waste carbon bricks, the binding agent comprises coal tar, phenolic resin, aluminum phosphate and asphalt powder, the antioxidant comprises Al powder, Fe powder and Si powder, and the plasticizer comprises sodium carboxymethylcellulose and polyvinyl alcohol. The self-repairing anhydrous stemming is obtained by adjusting the components and the proportion, can be firmly combined with a furnace hole brick into a whole under the high-temperature condition, automatically repairs the gradually-enlarged furnace hole size, prolongs the repairing period and prolongs the service life of the furnace hole brick while meeting the iron notch plugging function.