Abstract In the development of the western leadership theories, transformational leadership, charisma leadership and leader-member exchange theory (to be called LMX theory) can give reasonable explanation to leadership. Owing to the differences of culture, the eastern Chinese society develop paternalistic leadership which depends on tradition of Chinese culture and family system. However, which one can respond with best member efficiency? In this research, the staff of Southern Taiwan Post Office is the object. The aforesaid four leadership styles are independent variable, and the staff¡¦s commitment to organization, loyalty to organization, behaviors that benefit organization, self-evaluation achievement, and superior-evaluation achievement to be dependent variable. control variable is the staff¡¦s background. The purpose of this research is to find out the forecast effect of leadership style to member efficency. Questionnaire survey is the way to collect data for this research. The compilation of questionnaire is according to the scale which is compiled by formerly researchers of the related field, and to repeat to verify concept construction in factor analysis. There are 249 pieces questionnaire being gathered. The main methods of analysis are to take hypothetic-verification by descriptive statistics, correlational analysis, and blocked regression analysis. The conclusions of this research shows that the staff¡¦s commitment to organization, loyalty to organization, and behaviors that benefit organization for Post Office is high. While the leaders of Post Office Lead members in LMX theory, the members¡¦ commitment to organization, loyalty to organization, self-evaluation achievement and superior-evaluation achievement are maximum forecast effects. While the leaders of Post Office lead members in charisma leadership style, the members¡¦ behaviors that benefit organization are maximum forecast effects. Furthermore, in this research we can find that the staff of Post Office which have higher educational background is negative forecast effect in commitment to organization and loyalty to organization. Finally, the concrete suggestions have been mode by conclusions of this research to leaders of Post Office and direction for future research in reference. Key words: Transformational Leadership, Charisma Leadership, LMX, Paternalistic Leadership, Commitment to Organization, Loyal to Organization, Behaviors that Benefit Organization