<p>　The purpose of this study was to gain information about mental health of junior high school students through the relationship between stressors (teachers, friends, schoolwork) and stress responses (physical symptoms, depression/anxiety, displeasure/anger, helplessness), and to clarify characteristics of students’Egogram as a parameter between the two variables above.</p><p>　Six hundred nineteen junior high school students filled out a signed inventory survey.</p><p>　The results were as follows: Some sex differences were found in junior high school student Egogram patterns. Male Egogram showed trapezoid shaped pattern with high NP, A and FC scores. On the other hand, female Egogram showed M shaped pattern with high NP and FC scores. The group of students that had higher stress response pattern showed an Egogram pattern with lower scores of NP and A, higher AC level, in comparison to the other group of the students with lower stress responses. In the case of male group, schoolwork as a stressor caused lower score of A and higher level of stress responses. As for female group, friends and schoolwork as stressors caused higher score of AC and higher level of stress responses.</p><p>　Based upon the above research, it is suggested that less objectivity in the male group and stronger restraint in the female group could be the main factors to strengthen stress responses. It is also suggested that we should promote the student mental health considering sex differences, and that the effective screening test should be introduced to the educational counseling of junior high school.</p>