The invention belongs to the field of refractory bricks, and in particular relates to refractory bricks for a rotary kiln. Each refractory brick comprises a glass fiber heat insulation layer, fixing limiting rings, a kiln cavity, a rock wool upper cover, a rock wool lower cover, embedding grooves, embedding limiting blocks, refractory clamping bricks, a filling groove cavity, glass fiber filling blocks, embedding clamping grooves, a first refractory slurry layer, mounting holes, a second refractory slurry layer and mounting strips. According to the refractory bricks, the structure is reasonable; after being used, the refractory bricks perform fire resisting through the self-refractory property, and meanwhile, through the cooperation of the glass fiber filling blocks, the rock wool round covers and the glass fiber heat insulation layer, heat insulating can be effectively carried out, so that the integral heat insulation effect of the rotary kiln is improved, and the heat loss is reduced; when the refractory clamping bricks are laid to form the kiln cavity, the refractory clamping bricks and the embedding clamping grooves are clamped, so that suspending is carried out, and limiting is realized; and mounting and stacking are simple, and when laying is carried out, the refractory clamping bricks are not needed to be manually supported, so that the convenience is provided for construction.