The method is for producing a flexible display device, the flexible display device including a first flexible base material and a second flexible base material which are attached to each other by a first adhesive layer, the method including the following steps (1) to (4) in the order given: (1) forming a conductive line and terminals; (2) forming a removal layer to directly cover the terminals; (3) sequentially arranging multiple layers including the first adhesive layer and the second flexible base material, with higher interfacial adhesions present between the removal layer and the second flexible base material than the interfacial adhesion between the removal layer and the terminals; and (4) exposing the terminals.