This study was done to investigate emotional awareness, emotional expressiveness, ambivalence over emotional expressiveness, and college student adjustment, to analyze the factor affecting college student adjustment. The subjects were 159 freshman nursing students. Data were collected through structured questionnaires from May 20 to June 10, 2012. Data analysis was done using descriptive statistics, independent t-test, ANOVA, Pearson correlation coefficient, and multiple regression with SPSS WIN v 18.0. Positive correlation were found between college student adjustment and mood monitoring as well as mood labeling. On the other hand, ambivalence over positive emotional expressiveness and ambivalence over negative emotional expressiveness were significantly negative correlation with college student adjustment. In addition, mood monitoring, ambivalence over positive emotional expressiveness, mood labeling, and ambivalence over negative emotional expressiveness accounted for 31.8% of variance in college student adjustment. The results of this study suggest that programs for promoting emotional awareness and reducing ambivalence over emotional expressiveness are important for college adjustment in freshman nursing students.