Extraskeletal Ewing`s sarcoma was first reported by L. Angervall and F.M. Enzinger in 1975. Clinically the tumor affects mainly young adults and children The extraskeletal Ewing`s sarcoma are mainly involved the soft tissues of the trunk and lower extremity. Microscopically. extraskeletal Ewing`s sarcoma is indistinguishable from the Ewing`s sarcoma of bone. We recently experienced a case of extraskeletal Ewing`s sarcoma of the anterior chest wall in a 13-year old female. The patient underwent local wide excision and postoperative radiation and combind chemotherapy were done. This group of tumors has been rarely reported in Korea. We presented a case of extraskeletal Ewing`s Sarcoma in the anterior chest wall with reviw of world literature.