A mat for pet toilet has a base material, belt-like protrusions that have flat planes having no adhesiveness on top portions on the base material, and are arranged side by side therebetween by providing concave grooves at an interval at which no pet trips and falls in places between the grooves, and adhesive layers provided in bottom portions of the concave grooves. Granular matters for pet toilet to be attached onto legs of a pet getting out of the pet toilet are dropped and separated from the pet while the pet walks on flat portions of the belt-like protrusions on the mat for pet toilet, by arranging the mat for pet toilet around the pet toilet, fall in the adhesive layers provided between the belt-like protrusions, and are adhesively captured, and thus are not scattered on the floor around the pet toilet.
