A flame retardant modified asphalt waterproofing coiled material coating, a flame retardant self-adhesive asphalt waterproofing coiled material and a preparation method therefor. The waterproofing coiled material comprises a metal glass fiber mesh composite flame retardant layer, a flame retardant modified asphalt layer, a glass fiber tire flame retardant layer, a flame retardant self-adhesive asphalt layer and an isolation layer sequentially provided from top to bottom. The present invention has the advantages of being thin in thickness, adapting to the trend of building energy conservation, cool self-adhesive construction, high bonding strength, good heat resistance, construction without open flame, convenient construction, safety and environmental protection, excellent waterproof and flame retardant performance, multi-layer cooperative flame retardant, fire-proof grade of B1, and stopping burning after leaving a fire source. In particular, the present invention is suitable for building waterproofing with high waterproof requirements, and can be flame retardant from inside to outside and from outside to inside. The present invention has excellent flame retardant performance and wide application prospect.
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