A liquid ejecting apparatus including a head unit that has a plurality of heads along a first direction, in which a plurality of nozzles that eject a liquid onto a medium are lined up in the first direction, and that ejects the liquid while moving relative to the medium in a second direction, which intersects the first direction, the head unit having a width in the first direction that is greater than a width of a medium in the first direction, a movement mechanism that makes the head unit move relative to the medium a plurality of times alternately in the second direction and the first direction, and a control section that forms a raster line group by forming each raster line.