The invention discloses explosion-proof daub. The daub is prepared from a component A and a component B in a mass ratio being 1:1 by compounding; the component A is prepared from raw materials in a weight ratio as follows: 20-30 parts of epoxy resin, 50-60 parts of packing and 10-30 parts of an electric insulation auxiliary; the component B is prepared from raw materials in a weight ratio as follows: 20-30 parts of an LZH-200 type curing agent, 20-30 parts of a modified amine curing agent, 30-40 parts of packing and 5-30 parts of an electric insulation auxiliary. During storage, the two components are separately placed and sealed; during using, the two components are mixed uniformly. The explosion-proof daub has excellent electric insulation property and sealing performance, and the performance is lasting and stable, so that the explosion-proof daub cannot fall off or deteriorate after long-term use and can be widely applied to various explosion-proof devices.