This study was made in order to find out the relationship between the psychological soundness and the eating attitude influenced by eating disorder, and the summary of the results are as follows; 1. Almost all of the surveyed girls were in the criteria of standard weight, however they regard themselves more obese than what their actual body shape normally shows. It shows that they want a further slimmer body shape than the standard one (p=0.0000). 2. Tangable relationship was observed between such variables as her own acknowledged body type, eating attitude influenced by eating disorder and the psychological soundness. The more the girls think themselves slim the higher the score of eating attitude becomes (p=0.0000) and the lower the anxiety score becomes (p=0.0044). 3. Significant relationships was found between the obesity and the eating attitude influenced by eating disorder (p=0.0001). For the underweighted girls the high score of eating attitude influenced by eating disorder was observed, and it shows the increasing degree of eating disorder risk for them.