An embroidery machine includes a plurality of thread reel stand bars, a plurality of thread reels installed to the thread reel stand bars, respectively, a plurality of needles to which threads are supplied from the respective thread reels, at least two of the needles being selected to operate, on the basis of an embroidery data, in order for forming a stitch pattern of multiple colors, a wireless tag attached to each of the thread reels an having information related to the thread wound therearound, and a receiving device, for reading the information in the wireless tag, provided at each of the thread reel stand.