PROBLEM TO BE SOLVED: To provide a cover member which prevents an absorbent member from shifting and is less likely to leave urine on a surface.SOLUTION: A cover member 1 of an absorbent member 5 which is arranged on an outer edge side of the absorbent member after directly arranging the sheet-like absorbent member 5 which can absorb excrement of a pet on a setting surface for covering a part of the absorbent member and has an opening part on a central side has a prescribed width W in a direction crossing a direction along the outer edge of the absorbent member 5 and an inclined part 11 formed on an upper surface to incline downward from an outside edge in a width direction to an inside edge. The cover member 1 has the width W of 80 mm or more and 110 mm or less and a maximum height of 7 mm or more and 30 mm or less.
