Name Lt.Gen.KRIT KITWIWATKUL Course NDC Class 66 The study on "Evaluation of the Effectiveness of the Implementation of the Act on Criteria and Methods for Good Urban Management in the Office of the Permanent Secretary of the Ministry of Defense, Case Study of the Office of Defense Bureaucratic System Development" aims to study the guidelines for implementation under the Act on Criteria and Methods of Good Urban Management. Obstacles that the unit has implemented according to the above guidelines and to use the results of research studies to improve and develop. Guidelines for the development of the organizational management system with a focus on The procedure for evaluating the performance of the Government and the evaluation of the performance of the Office of the Permanent Secretary of Defense and the units directly under the Office of the Permanent Secretary of Defense to increase efficiency and be able to show concrete results. The study was qualitative by collecting data from military officials affiliated to the Defense Bureaucratic Development Bureau and unit civil servants at the Office of the Permanent Secretary of the Ministry of Defense who is responsible for supervising the bureaucratic development of the unit. The analysis of the results of the study included the distribution of percentages, averages, and standard deviations