The purpose of this study was to analyze the effects of college students' participation in a career group program to strengthen their career competency. For this purpose, in this study, we tried to find out what kind of changes in self-efficacy and career barrier perceptions when college students participated in a career program, and to expand their understanding through qualitative data analysis on students' satisfaction and experiences. As a result of pre-post difference analysis on career decision self-efficacy and perception of career barriers, among the sub-factors of career decision efficacy, self-evaluation (t=4.44, p=.000), job information collection (t=4.37, p=.000) ), goal selection (t=5.49, p=.000), future planning (t=4.80, p=.000), and problem-solving (t=4.07, p=.000) were significant at the .001 level. It was found that there was a positive effect. Among the sub-factors of career barriers, lack of job information (t=-6.35, p=.000), lack of self-assurance (t=-5.04, p=.000), indecisive personality (t=-4.43, p=.000) , there was a significant decrease in the perception of career barriers in extrinsic obstacles (t=-1.87, p=.07). As a result of the satisfaction analysis of the participants, the average of 4.84 (SD=.37) on the 5-point Likeard scale for overall satisfaction with the program was very high. As a result of the participatory reflection analysis, the participating students participated in the understanding program in response to the demands for career exploration and self-development and growth, and through participation in the program, self-understanding and reflection on their own characteristics and effective career paths. could understand about In addition, it was found that emotional support was obtained through positive communication and interaction with group members. Therefore, it was found that the effects and experiences of participation in the program were reflected in the pre-post effect analysis, satisfaction, and participation reflections. As described above, the results of this study are expected to be useful in obtaining specific data for the effective operation of a career group program suitable for the characteristics of universities and current students.