A device for inserting a flexible printed circuit board into a connector includes: a gripper to which the flexible printed circuit board is securable; a deformer movably connected to the gripper; and a transporter connected to the gripper and the deformer. Movement of the deformer relative to the gripper, applies a transformation force from the deformer to a portion of the flexible printed circuit board to bend the portion about edges of the gripper, and transportation of the transporter transports the gripper together with the flexible printed circuit board which has the portion of the flexible printed circuit board which is bent about the edges of the gripper, toward the connector, and inserts the flexible printed circuit board into the connector.