To provide a drying device capable of shortening a drying time by using effects of infrared rays while suppressing costs.

The device for drying a coating film applied to a web includes: a plurality of hot air injection nozzles disposed to face upper and lower sides of the web and supporting the web in a floating manner; and infrared ray radiation plates disposed to face the upper and lower sides of the web, installed between pitches of the plurality of hot air injection nozzles and emitting infrared rays by hot air injected from the hot air injection nozzles. Infrared ray radiation covering layers covered with infrared ray radiating substances which emit infrared rays by hot air injected from the hot air injection nozzles are installed on hot air injection faces of the hot air injection nozzles opposing the web.