A disclosed tile binder is composed of the following raw materials in parts by weight: 30-50 parts of polyacrylic resin emulsion, 5-15 parts of acrylamide-vinyl acetate copolymer, 5-8 parts of poly(ethylene glycol) butyl ether , 2-5 parts of a polycarboxylic acid water reducer, 1-1.5 parts of acrylonitrile-vinyl chloride copolymerization fiber, 25-40 parts of titanium slag micropowder, 15-25 parts of titanium-pillared clay, and 10-15 parts of water. Compared with the prior art, the production technology of the tile binder is simple, the prepared tile binder is relatively excellent in binding performance, waterproofness, weatherability, acid and alkali resistance, corrosion resistance and construction performance, titanium slag is fully utilized, and a new utilization approach for titanium is exploited when production cost is reduced.