The purpose of present study is to examine the effects of obesity, body image satisfaction, and binge eating on depression in middle school girls. A total of 402 middle school girls participated in this study. The participants are categorized into three groups : (1) under-weight (2) normal weight (3) obese group based on the Body Mass Index. The degree of body image satisfaction, binge eating, and depression were measured by the Body-esteem Scale, the Binge Eating Scale, and the Childhood Depression Inventory, respectively. Results were as follows: The individuals who possess high obese level would experience higher body image dissatisfaction, binge eating, and depression than non-obese people. Also, the individuals who have high obese level and body image dissatisfaction would experience higher depression. However, the interaction effects of obese level and binge eating on depression were not significant. Then we discussed the clinical and practical implication of result.