The invention discloses a drying device for a film. The drying device comprises an upper casing, a lower casing, a conveying frame, a conveying device, a drying frame, a fan, a first air inlet pipe, aheating assembly, a second air inlet pipe, a drying chamber and air nozzles. The conveying device is disposed in the conveying frame, the fan and the heating assembly are connected through the firstair inlet pipe, the top end of the second air inlet pipe is connected with the heating assembly, and the bottom end of the second air inlet pipe is connected to the drying chamber. The lower plane ofthe drying chamber is provided with the plurality of air nozzles, the lower plane of each air nozzle is of a wind net structure, the lower plane of each air nozzle is provided with a plurality of first net ports, the first net ports on each air nozzle are evenly distributed on the lower plane of the air nozzle with a center line of the corresponding air nozzle as the center. The wind net structurecan effectively alleviate wind pressure, the wind speed of the heating assembly reaches a gentle state, the film surface drying efficiency is reduced, a coating in the film can be dried completely, and the temperature within the heating assembly can be controlled so that the film can be uniformly dried.