This study attempted to examine the influence on career development, which varies depending on the level of self-determination of learning motivation by identifying the patterns of developmental trajectory in career maturity and testing contemporaneous and lagged effects of self determination learning motivation(intrinsic motivation, identified motivation, introjected motivation, external motivation, amotivation) on career maturity in adolescents. To do this, latent growth models were applied to GEPS 2012 data from the 4th to 9th wave (7th-12thgrades). The results were as follows. First of all, discontinuous piecewise latent growth modeling was found to be adequate to explain the patterns of developmental trajectory of career maturity in adolescence, in which career maturity decreased during middle school period but increased during high school period. Second, the contemporaneous effects of external motivation on career maturity were negatively significant at each time point. Also, the negatively significant lagged effects were found at 8th, 10th, 12th grades. However the positively significant contemporaneous and lagged effects of identified motivation were at the every time points. In addition, the contemporaneous effects of intrinsic motivation on career maturity were positively significant at 7th to 10th grade. Moreover, the negatively significant contemporaneous effects of amotivation were found at each time point and the lagged effects of amotivation were negatively significant at 11th and 12th grade. Based on these results, this study is meaningful in that it discussed educational implications for effective career development, such as creating an educational environment that can increase self-determination of learning, such as selecting subjects suitable for students' careers.