The invention discloses an inflaming retarding building coating material. The inflaming retarding building coating material is characterized by comprising the following substances in parts by weight: 20-30 parts of expanded perlite, 10-25 parts of a mineral heat-insulation material, 11-26 parts of glass fibers, 9-14 parts of scallop shell powder, 9-14 parts of scapharca subcrenata shell powder, 11-15 parts of oyster shell powder, 8-12 parts of stearic amide, 8-16 parts of machine-made sand, 15-23 parts of polyvinyl butyral, 20-26 parts of PA66 resin, 4-8 parts of oleamide, 5-9 parts of tin tetrachloride, 10-27 parts of iron oxide and 100 parts of water. The inflaming retarding building coating material has the effects of light weight, high strength, strong binding power, no seam, inflaming retarding performance, no hollowing, no cracks, no pulverization, non-combustible performance, no expansion, waterproof performance, strong weather resistance, good heat-preservation and heat-insulation performance, impervious and anti-cracking performance, strong flexibility and good integrality.