This study aims to show what influence a career group counseling program has on the career attitude maturity in female college students and their career preparation behavior. As a result of the study, it was discovered that there was a statistically significant difference in determinacy and readiness in the sub-areas of career attitude maturity while there was no significant difference in reality. Also, there was a statistically significant difference in exploration and preparatory behavior in sub-areas of the career preparation behavior. Such results indicate that the career group counseling program had a significant influence in the career attitude maturity and their career preparation behavior. Therefore, this study suggests that to enhance the career attitude maturity in female college students and their career preparation behavior, further organized research on career group counseling programs is needed and its utilization should be increased.