The present invention relates to a transfer device applied to a robotic arm and a production line for pulp molding, which solves the problems of lower production efficiency and the like in the prior art. The transfer device applied to a robotic arm for pulp molding includes a wet blank transfer mold provided with a closed air chamber therein, a front surface of the wet blank transfer mold is provided with at least one inward concave matching cavity capable of being sleeved outside a pulp wet blank container and recessed toward the closed air chamber side, the inward concave matching cavity is matched with the pulp wet blank container, an inner wall of each inward concave matching cavity and a bottom of the inward concave matching cavity are respectively provided with a plurality of small communicating holes for communicating the inward concave matching cavity with the closed air chamber, a back surface of the wet blank transfer mold is connected with a moving frame parallel to the wet blank transfer mold through a guide mechanism, and a driver is connected between the back surface of the wet blank transfer mold and the moving frame. The present invention has the advantage of improving the production efficiency.