A bucket for a work vehicle, comprising: a bucket main body portion including a basal plate having a curved shape, and a left side plate and a right side plate, the left side plate and the right side plate being adhered to the basal plate; a left boom attachment portion adhered to the rear surface of the basal plate, to the left side of the center of the basal plate in the lateral direction; a right boom attachment portion adhered to the rear surface of the basal plate, to the right side of the center of the basal plate in the lateral direction; and a spill plate including a first spill plate portion connected to the upper edge of the bucket main body portion, and a second spill plate portion connected to the front edge of the first spill plate portion, wherein, in a top view, the second spill plate portion includes: a forward edge line extending in the right and left directions from a center of the bucket main body portion in the lateral direction; a first left edge line extending rearward and leftward to a first connection point from a first front end, the first front end being a left end of the forward edge line; and a first right edge line extending rearward and rightward to a second connection point from a second front end, the second front end being a right end of the forward edge line, wherein, in a top view, the first spill plate portion includes: a second left edge line connected to the first left edge line at the first connection point, the second left edge line extending rearward and leftward, or leftward, from the first connection point to a third connection point; a second right edge line connected to the first right edge line at the second connection point, the second right edge line extending rearward and rightward, or rightward, from the second connection point to a fourth connection point; a third left edge line connected to the second left edge line at the third connection point, the third left edge line extending rearward and leftward from the third connection point, the third left edge line inclining more rearward than the second left edge line; and a third right edge line connected to the second right edge line at the fourth connection point, the third right edge line extending rearward and rightward from the fourth connection point, the third right edge line inclining more rearward than the second right edge line, wherein the first connection point is positioned to the left side of a first right end position, the first right end position being a right end position of the left boom attachment portion, and wherein the second connection point is positioned to the right side of a first left end position, the first left end position being a left end position of the right boom attachment portion, characterized in that the second left edge line inclines more forward than the first left edge line, the second right edge line inclines more forward than the first right edge line, at least a part of the first left edge line is positioned to the left side of the first right end position, and moreover to the right side of a second left end position, the second left end position being a left end position of the left boom attachment portion, and at least a part of the first right edge line is positioned to the right side of the first left end position, and moreover to the left side of a second right end position, the second right end position being a right end position of the right boom attachment portion. a bucket main body portion including a basal plate having a curved shape, and a left side plate and a right side plate, the left side plate and the right side plate being adhered to the basal plate; a left boom attachment portion adhered to the rear surface of the basal plate, to the left side of the center of the basal plate in the lateral direction; a right boom attachment portion adhered to the rear surface of the basal plate, to the right side of the center of the basal plate in the lateral direction; and a spill plate including a first spill plate portion connected to the upper edge of the bucket main body portion, and a second spill plate portion connected to the front edge of the first spill plate portion, a forward edge line extending in the right and left directions from a center of the bucket main body portion in the lateral direction; a first left edge line extending rearward and leftward to a first connection point from a first front end, the first front end being a left end of the forward edge line; and a first right edge line extending rearward and rightward to a second connection point from a second front end, the second front end being a right end of the forward edge line, a second left edge line connected to the first left edge line at the first connection point, the second left edge line extending rearward and leftward, or leftward, from the first connection point to a third connection point; a second right edge line connected to the first right edge line at the second connection point, the second right edge line extending rearward and rightward, or rightward, from the second connection point to a fourth connection point; a third left edge line connected to the second left edge line at the third connection point, the third left edge line extending rearward and leftward from the third connection point, the third left edge line inclining more rearward than the second left edge line; and a third right edge line connected to the second right edge line at the fourth connection point, the third right edge line extending rearward and rightward from the fourth connection point, the third right edge line inclining more rearward than the second right edge line,