A liquid ejection device includes: a conveyance mechanism which conveys a recording medium in one direction; a plurality of liquid ejection heads each having an ejection face which has a plurality of ejection openings for ejecting liquid and faces the conveyance mechanism, the liquid ejection heads being arranged along the one direction; a plurality of wipers which respectively wipe the ejection faces; a holder which holds the wipers; a support which supports the holder; and a movement mechanism which moves the holder in a direction perpendicular to the one direction. The holder is displaceable in the one direction relative to the support. The holder has an intruder which intrudes into a gap between two liquid ejection heads adjacent to each other.