Abstract The domestic government department as a result of the government law protection, its staff is enjoyed for a long time the legal wages, the income disparity is not also obvious, in addition the power of works is stable, forms its unique culture. Relatively, its manager's leadership behavior and the organization performances, also have a difference with the privately operated enterprise. In recent years world¡¦s advanced countries impelled¡yReengineering Government¡z, the study enterprise was in vogue¡yBusiness Process Reengineering¡z, proposed served the idea to take the government as the customer guidance, expected the affiliation was reborn by organization's leadership behavior, changed tradition administration organization culture operation pattern, adapted the fast change environment, satisfied the populace to the government service request. The government department may from the service populace's viewpoint, readjust, the design administration organization and the administrative flow, achievement organization of performances the government department. The research take "the leadership behavior, the organization culture, the organization performances", discusses the correlation of the government department in the leadership behavior, the organization culture, and the organization performances. This research takes the questionnaire survey, is of department manager by way of the Tainan municipal government civil administration bureau correlation (municipal government civil administration bureau, household politics office and various areas geographical unit of government) is the research object, effectively asked the volume returns-ratio is 71.33% (sends asks a question volume 150, effectively asked volume 107), by way of the statistical analysis process, after reorganize the induction, this research discovered: 1. The leadership behavior and organization culture each other have reveals is being correlated. 2. The leadership behavior and the organization culture has to the organization performances reveals is affecting. 3. The different department manager individual characteristic in the leadership behavior, the organization culture and in the organization performance has reveals the difference. Key word: Leadership behavior, organization culture, organization performances.