The present invention automatically relates to bail attachment devices, set moves along the bail attaching appropriate to attach the bail to the coordinates X-axis and Y-axis direction of the material according to the pattern, or table that rotates around Z axis, an upper portion of the work surface such symmetry to the both ends are provided, respectively, to attach a color and at least a gem supply comprising one of the supply module which rotates to feed the separated jewelery according to the size and jewelry supplied from the supply module sequentially on the jewel mounting material comprises a bail attached is disposed between said supply module, it said bail attaching portion and the other while adsorbing the bail from one end of the supply modules arranged in a are provided to enable each pivoted to an upper portion of the supply module, which one is the work surface are provided to a pair of gem adsorption sphere, it rotates the sphere lower side of the jewelry adsorbed to pass in order to attach the gem adsorption from a supply module arranged to the other end of the work table to said gemstone mounting material, to achieve a predetermined angle to each other times coupled around the shaft, and between the bail absorption receiving the transmission from port bail position and the position for attaching the bail to the bail mounting material comprises a plurality of jewelery mounting opening for pivoting at a predetermined angle.