This study analyzed the relationship between college students’ adult attachments and attitudes toward seeking professional help the mediating effect of anticipated risk and utility on self-disclosure. The participants were 487 college students (male: 194, female: 293). The results of the analysis showed that adult attachment had a negative correlation with attitude toward seeking professional help, and anticipated utility and attitude toward seeking professional help on self-disclosure were negatively correlated, and anticipated risk and attitude toward seeking professional help on self-disclosure were positively correlated. In addition, anticipated utility and risk on self-disclosure mediated the relationship between college students adult attachment and attitude toward seeking professional help. This study verified the relationship between adult attachment and attitude toward seeking professional help for college students, and the role of anticipated utility and risk on self-disclosure in that relationship. Based on these results, implications and limitations were discussed.