This research focuses on the " Quality of service Bureaucracy against the Behavior of population in Luwuk Banggai Regency, Subdistrict "research activities is expected to contribute to the assessment of the quality of service Bureaucracy Behavior of population in Luwuk Banggai Regency, Sub district. This Research Method using descriptive eksplanatori. This research uses techniques of quantitative analysis obtained by the respondent's statement contained on the questionnaire data, and for checking the accuracy of the data is done also interviews, observation and documentation. Whereas in describing data obtained quantitatively used descriptive statistics, this was done in this study to obtain the correct information. Based on the results of the spread of the now questioner to the respondent that the quality of service Bureaucracy against the Behavior of population in Luwuk Banggai Regency, Sub district belongs well with gains average score was 75.24%.