This study examined reciprocal relationship between career decision-making self-efficacy and career identity of university students from graduation to first vocational choice. This study used 125 students who were seniors at 1st data collection, 112 who graduated at 2nd data collection period, and 137 who got employed or went to a graduate school at 3rd data collection. This study used CDMSES-SF(Career Decision-Making Self-Efficacy Scale-Short From) and VIS(Vocational Identity Scale) for measuring their career decision-making self-efficacy and vocational identity. For data analysis, ARCLM(Autoregeressive cross-lagged modeling) was performed to test longitudinal reciprocal relationship. The results were as below: 1) Career decision-making self-efficacy and career identity were significantly stable over time. 2) Career decision making self efficacy predicted subsequent career identity and career identity predicted subsequent career decision-making self-efficacy too. Thus, we can see the reciprocal relationship between career decision- making self-efficacy and career identity. As the cross-lagged effects of career decision-making self-efficacy on career identity from T2 to T3 was the highest compared to other times, to focus on the career decision-making self- efficacy around university graduation period for the career intervention could be more effective.