The present invention relates to a novel polypeptide having chemokine activity, and more particularly to a polypeptide consisting of the amino acid sequence represented by SEQ ID NO: 1 and use thereof. Since the polypeptide of the present invention exhibits chemokine activity through binding to CCR3 consisting of SEQ ID NO: 1, it is used for various purposes such as immunomodulation, detection of CCR3-mediated disease or disease, diagnosis, treatment, and drug development. High utilization effect.本発明はケモカイン活性を有する新規なポリペプチドに関する、さらに詳細には、配列番号1で表示されるアミノ酸配列からなるポリペプチド及びこれの利用に関するものである。本発明のポリペプチドは、配列番号1からなるCCR3への結合を通じたケモカイン活性を示すので、免疫調節、CCR3を媒介とする疾患又は病症の検出、診断、治療、薬剤開発などの多様な目的で活用効果が高い。