Based on the vocational personality trait, this study aims to explore the relationship between the vocational preference inventory conducted by new recruitment of T Bank and their individual performance, as well as the influences of professional training hours on different level of works. Furthermore, this study will search for the correlation between controlling variables and population variables. This study collects relevant information from database established at T Bank beginning from its establishment to the end of 2003, which are categorized as the following files: ¡§vocational preference inventory¡¨, ¡§educational training¡¨, ¡§employees¡¦ performance¡¨ and employees¡¦ basic information¡¨, then executes the statistic analysis for a total of 926 effective samples through one-way ANOVA, Pearson correlation analysis, multiple regression analysis. This study also uses the results of the vocational preference inventory, conducted by the T Bank new recruitment, as the independent variables, individual performance as dependable variables and the professional training hours, work classification as moderating variables, searching for the correlation and influence between them. Furthermore, this study searches for the moderating effects between each item of variables by using the professional training hours and work classifications as moderating variable. This study reveal that the variables such as ¡§gender¡¨, ¡§age¡¨, ¡§education¡¨ and ¡§work period¡¨ appear obvious discrepancy respectively in individual performance, while there is no obvious difference in the devotional degree of an organization. Then, there is an obvious correlation in some parts of professional personality trait, revealing a fact that the employees should be assigned for his or her work according to the results of the vocational preference inventory. In the ¡§work classification¡¨ to ¡§vocational personality trait¡¨, ¡§leadership¡¨ and ¡§challenge¡¨ show the moderating effects on ¡§indivisual performance¡¨. Finally, the study indicates that the ¡§professional training hours¡¨ has no moderating effects on the ¡§professional personality trait¡¨ and ¡§individual performance¡¨ and it also presents that the ¡§independence¡¨ in the ¡§professional personality trait¡¨ is the key factor for each employee¡¦s independent learning. The results of study also reveal that the vocational preference inventory and the professional training hours play in employees training. There are few studies for the vocational preference inventory, in particular its substantial experiment; therefore, this study aims to enhance and supplement the study for this part. On the other hand, this study also approves that the professional training shall be designed on a basis of short-term course in order to meet the actual requirements and efficiently carry out one special mission.