A maintenance unit is a unit that maintains a liquid ejecting head and includes a cap holder that has a cap member capable of abutting against the liquid ejecting head, guide pins that guide the cap holder in a movable manner in an approaching/separating direction in which the cap member approaches and is separated from the liquid ejecting head, an engagement portion that is capable of being engaged with the cap holder, and a displacement operating portion that displaces the engagement portion between a restricting position at which the engagement portion restricts drawing of the cap holder out of the guide pins and an allowing position at which the engagement portion allows the cap holder to be drawn out of the guide pins.