In this paper, a new chipless RFID tag is designed based on the concept of metama- terials induced transparency (MIT). By inserting an arc slot on the circular loop and adjusting the length of the slot, a narrow transmission windows will appear in the stopband when the resonance frequency of circular loop is similar to the resonance frequency of arc slots. Such transmission windows has high Q factor and each transmission pole comes along two transmission zeros on its side, so the resonant frequencies can be brought very close. To make high density coding, four arc slots are added on the circular loop to generate multiple zero and pole distributions in a relatively narrow frequency band. By locating some stubs along the slot, the relevant codes are deleted because the resonators are nulled. Then four-bit chipless RFID tag is finally finished. The design concept is verified well by the full-wave simulation.