The invention discloses an iron phosphate cement, belonging to the technical field of building materials. The cementing material is prepared by uniformly mixing the following raw materials with the particle size of 1-100 mu m in parts by weight: 100 parts of acid phosphate, 400-800 parts of waste residue containing rich iron oxides, 3-6 parts of coagulation regulating material, 10-30 parts of other industrial waste residues and 15-200 parts of water. The iron phosphate cement has the advantages of adjustable setting time (several minutes to several hours), quick hardening, high strength, high binding property, no reduction of later strength, and the like, and can be quick hardened at normal temperature. The iron phosphate cement is simple in preparation technique, has high constructability, is suitable for quick emergency repair of defects of roads, airport pavements, bridges, tunnels, cooking ranges, dams, ditches and other engineering structures, and has wide application prospects in curing of high-risk waste residues containing rich radioelements, heavy metal elements, arsenic and the like.