A maintenance device includes a wiper that wipes a liquid ejecting unit; a double rack member which includes a rack sections made up of a first rack section and a second rack section and is configured to reciprocate the wiper; and an intermittent gear which includes a teeth portion which meshes with one of the two rack sections and a toothless portion which is arranged in line with the teeth portion in a rotation direction, wherein the double rack member allows the wiper to perform a forward motion when the first rack section meshes with the intermittent gear, and allows the wiper to perform a backward motion when the second rack section meshes with the intermittent gear.