After the vocational voucher system was introduced, trainees were granted broader options when selecting training institutions, as financial supports were directly given to the trainees and not to the training institutes. Moreover, it was found that the trainee satisfaction has increased after the introduction of the system. However, what they were more satisfied about or less satisfied about could not be analyzed in detail. This research analyzed the level of trainee satisfaction by training components and investigating what the major components were, which crucially affect the general trainee satisfaction. In order to do this, the mean and the standard deviation of trainee satisfaction by training components were calculated using the results of HRD-Net ‘Trainee Course Evaluation’ and the evaluation grade of ?2013 Evaluation of Vocational Training Institute?. Additionally, in order to identify main factors that affect the general trainee satisfaction, multiple regression analysis has been carried out. The major research results were as followings. First, looking at the general trainee satisfaction by grades from the evaluation of vocational training institute, the institutes with grade A, A being the highest, have obtained the top score with an average of 4.48 points. Second, looking at the trainee satisfaction by training components, components such as trainer, contents, methods, facilities and equipments, and administration service have generally obtained a high score with 4.43, 4.28, 4.23, 4.21, and 4.37 points respectively. However, employment support component has obtained the lowest score out of the 6, with a score of 4.03. Third, the major components that affect the general trainee satisfaction were found out to be trainer and method. For enhancement of the trainee satisfaction, there needs to be a system that can allow training institutes not only to acquire excellent trainers but also to invest in them so that long-term visions and plans can be realized.