the frequency of RFID chip of miniaturized tag is 13.56MHz. In this paper, we designed a miniaturized bluetooth tag antenna, which in the form of inductive coupling. The electromagnetic simulation software HFSS of ANSYS was used to simulate and analyze the field strength of various shapes, thickness, number of layers and rings of the miniaturized tag antenna. We researched the inductance matching of coils. And checked the S parameters of the antenna to make the frequency of the 13.56 MHz have a fine resonance. We designed a miniaturized tag antenna that the size of it was small and the performance of antiinterference was strong. Which maked it have the best transmission performance in13.56 MHz. Finally, The module was packaged after the antenna installed on the RFID chip, which had a low cost, high practicability and wide application. The result of the most remote reading distance of the tag was 35 cm.