A sealing member (200) is a sheet-like member to seal a light-emitting unit of a light-emitting device. The sealing member (200) is cut into a shape including a corner (220) having a central angle θ that is larger than 180 degrees when the light-emitting unit of the light-emitting device is sealed. When the sealing member (200) is cut, irregularities occur in the thickness direction in a region (222: first region) having a predetermined width w from an edge of the corner (220). When the irregularities occur, sealability of the sealing member (200) is deteriorated. Here, when a curvature radius of the corner ((220)) is equal to or greater than the above-mentioned width w, occurrence of the above-mentioned irregularities is inhibited.