Provided is a novel sheet for covering a wound which exhibits high liquid absorption and strength. A sheet for covering a wound according to the present invention is a wound covering material that contains carboxymethylated natural or regenerated cellulose fibers and is characterized in that: the average degree of substitution of hydroxyl groups in a glucose unit that constitutes the cellulose is from 0.3 to 1.0 (inclusive) and from 5% to 80% (inclusive) of carboxymethyl groups are protonated.
