The utility model relates to a kind of panel fixing device, including tray and fixed mechanism, tray is used to support panel, and the two edges of panel along first direction have non-
coating area;Fixed mechanism, a set of fixed mechanism is equipped with every non-
coating area on tray, each set of fixed mechanism includes pressing plate, adsorption structure and locking structure, the length of pressing plate extends along second direction, adsorption structure is installed in the side of pressing plate towards tray, pressing plate can be moved to the non-
coating area of panel or move to completely stagger with panel, when pressing plate moves to the non-coating area of panel above, adsorption structure can be fixed with non-coating area adsorption, the two ends of pressing plate along second direction exceed the edge of panel and can be respectively through a set of locking structure and tray detachably connected, first direction and second direction are arranged at angle setting.The panel fixing device of the utility model can stably fix panel on tray, and will not shield the coating area of panel.