A liquid ejecting apparatus includes: a transportation section that transports a medium in a transportation direction; a head that ejects the liquid on the medium; a support member that supports the medium which is in a position facing the head while abutting a surface of one side of the medium; a heat source that is disposed in a position facing the support member; an abutting member that abuts the surface of the one side of the medium on an upstream side from the support member in the transportation direction; and a detection section that detects presence or absence of the foreign matter on a surface of the other side of the medium in an area of the medium which abuts the abutting member.