The invention discloses an FPC (flexible printed circuit) automatic board pasting machine. A fixed supporting plate of a machine frame of the FPC automatic board pasting machine is provided with an aluminum plate conveying assembly and an FPC carrying assembly, wherein the aluminum plate conveying assembly comprises a fixed conveying frame and a movable conveying frame, each of the fixed conveying frame and the movable conveying frame is provided with an aluminum plate conveying driving motor and an aluminum plate belt conveying mechanism, an aluminum plate support plate is arranged between the middle parts of the fixed conveying frame and the movable conveying frame, and is driven through a support plate driving mechanism, the fixed conveying frame is provided with an aluminum plate front position limiting mechanism and an aluminum plate back position limiting mechanism, the FPC carrying assembly is driven through a carrying plate driving mechanism, the upper end side of the FPC carrying assembly is provided with the movable support frame, the movable support frame is provided with an FPC grasping mechanism and an FPC rolling pressing mechanism, and the movable support frame is driven through a support frame driving mechanism. Through the structural design, the FPC automatic board pasting machine has the advantages that the FPC board pasting operation can be automatically and efficiently completed, the automation degree is high, the work efficiency is high, and in addition, the labor cost can be reduced.