In this study, We had investigated that degree of parenting attitude and their effect on school adjustment in obese children compared with general children, and moderating effect of peer attachment in two groups. Using the National Youth Policy Institute data, this study estimate the effect of narrow obesity (normal/overweight/obese) on the school adjustment. In our study results, obese children group was significantly higher(neglect, communication, trust), and obese children group was lower compared with the normal group(maltreatment, alienation). Second, among parenting attitude whereas effect of maltreatment was small or not-significant, neglect was increase school adjustment(both obese group and normal group). Also, their impact was higher in the obese children than normal children and especially, neglect had a great impact on school rule in obese group. Third, moderate effect of peer attachment wasn't significant to increase effect of parenting attitude on school adjustment(obese children group). However, normal children group was significant. Lastly, meaning, suggestion and limitation of this studies were discussed.