The present invention provides an environmental purification material coated with a calcium phosphate-related compound by a reprecipitation method, a process of producing the same, and a processed article thereof, and the present invention is a process of producing the target calcium phosphate-related compound-coated environmental purification material, the process including preparing an acidic mixed solution of a phosphate compound and a calcium compound having a solution concentration of 1 mmol/L to 1000 mmol/L, suspending a titanium dioxide substrate in this acidic solution, and gradually adding an alkaline solution to this suspension to precipitate and support a calcium phosphate-related compound on the titanium dioxide surface by a reprecipitation method, and an environmental purification material coated with a calcium phosphate-related compound that can be added and incorporated into, for example, organic fibers and plastics is provided.
