The prevalence of obesity and overweight among adolescent women has dramatically increased in Japan. One of the reasons for this increase in body weight is abnormal eating behavior. However, it is not clear what effect age has on abnormal eating behaviors specifically across the age range of adolescent women. We therefore investigated the effect age has on abnormal eating behaviors among early- and lateadolescent women. Results showed that the level of abnormal eating behavior was higher in the lateadolescent women than in the early-adolescent women. According to the increase in age, eating as diversion, overfeeding and irregular eating become more prevalent among adolescence women. In this study, we clarified that increasing age negatively affects the eating behaviors among adolescent-women.