This study examined the differences in appearance orientation and appearance management behavior in groups (classified by the body mass index) as well as explored the differences in each of demographic variables. Data were collected from 513 respondents from the city of Daegu as well as Gyeongbuk province. Collected data were analyzed by descriptive statistics, ANOVA, and Duncan tests. The results showed that 14.3% of the respondents were underweight, 60.0% normal, and 25.7% overweight according to BMI. The appearance orientation of the respondents was revealed to be high. Skin care was the most popular appearance management behavior, followed by make-up, clothing selection, hair care and weight training. Due to appearance orientation by body type, the appearance orientation for the underweight was the highest followed by normal and overweight. There were significant differences in skin care, make-up, clothing selection, hair care among the three groups in appearance management behavior; however, no differences in weight training. Generally, appearance management behavior of the underweight was the highest, followed by the normal and the overweight. In addition, there were significant group differences in appearance orientation and appearance management behavior according to demographic variables. This study contributes basic information to the field of appearance management behavior research and beauty industry marketing strategy through a better understanding of the relationships of BMI, appearance orientation, and appearance management behavior.