PROBLEM TO BE SOLVED: To provide a pet toilet sheet and three-dimensional spread pad which prevent offensive odor of pet excrement and have better appearance.SOLUTION: The pet toilet sheet 1 includes: a water impermeable waterproof sheet 31; an absorber 33 that is placed on the placing part 31b of the waterproof sheet 31 and that absorbs urine; a deodorant sheet 35 for covering the absorber 33; and a water permeable cover sheet 32 for covering the deodorant sheet 35. The outer edge part 31a of the waterproof sheet 31 comprises: a urine absorbing sheet 3 which is combined with the cover sheet 32 facing the outer edge part 31a; and a three-dimensional spread pad 2 which is spread on the cover sheet 32 of the urine absorbing sheet 3. The three-dimensional pad 2 has: two water permeable sheets 21, 22 which are piled; and powder type sodium bicarbonate 23 which is provided between the two water permeable sheets 21, 22. The outer edge part 21a of one water permeable sheet 21 is combined with the other water permeable sheet 22 that faces the outer edge part 21a.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】ペットの排泄物が発する悪臭を防止し、美観を良好にするペット用トイレシーツおよび立体敷パッドを提供する。【解決手段】ペット用トイレシーツ1は、不透水性の防水シ-ト31と、防水シート31の載置部31bに載置された尿を吸収する吸収材33と、吸収材33を覆う脱臭シート35と、脱臭シート35を覆う透水性のカバーシート32とを有し、防水シート31の外縁部31aが当該外縁部31aに対面するカバーシート32に結合されている尿吸収シーツ3と、尿吸収シーツ3のカバーシート32上に敷かれた立体敷パッド2とを備え、立体敷パッド2は、積み重ねられた透水性の2つの透水シート21,22と、2つの透水シート21,22の間に設けられた粉末状の重曹23とを有し、一方の透水シート21の外縁部21aが当該外縁部21aに対面する他方の透水シート22に結合されている。【選択図】図3