PROBLEM TO BE SOLVED: To provide a further rational construction technique relating to a treating material for animal excrement.SOLUTION: A method for producing a treating material for animal excrement and a device for producing the treating material for animal excrement includes: a process for granulating a raw material to acquire a granular material 1102; and a process for coating the granular material 1102 with colorant 1201. The process for coating the granular material 1102 with the colorant 1201 includes: a process for allowing the granular material 1102 to float; and a process for jetting out the colorant 1201 to the floating granular material 1102.