A drying device for drying a medium that has had a liquid ejected thereon includes a guide that the medium that has had the liquid ejected thereon abuts against, a tension control section that is capable of providing tension to the medium that is abutted against the guide, a heating section capable of heating the medium, and a cooling section capable of cooling the medium that has been heated by the heating section, wherein the tension control section is capable of generating a pressing force that presses the medium against the guide, and the heating by the heating section and the cooling by the cooling section are performed on the medium while the tension and the pressing force are being applied to the medium.