新入生に対し、大学への不本意感、学業へのつまずき感、日常生活におけるメンタルヘルスおよびストレス対処行動に関する調査を 2 回（入学当初および１年終了時）実施し、追跡が可能であった 1,411 名を対象に分析を行った。大学への不本意感または学業へのつまずき感が春から冬にかけて生じた学生のメンタルヘルスは悪化した。また、彼らは積極的対処行動が減少し、消極的対処行動が増加する傾向にあった。 ;This study researched the characteristics in mental health and stress coping behaviors of the university freshmen who are unwilling to join the university and who feel anxiety about academic learning for 1,411 university freshmen. A biannual survey on the unwillingness to join the university community and anxiety about academic learning was conducted in spring (the end of May) and winter (December to February). The mental health characteristics became worse among the students, who increased unwilling to join the university during the spring and winter months. In this group, it was tended to decrease their positive coping behaviors and to increase their negative coping behaviors.