This paper aims to integrate internal audit practices in the management of municipalities and the District of Bamako in order to improve their public management. Achieving the objective requires answering the question entitled, “Why should the internal audit be integrated into the management of municipalities and the District of Bamako? ". It is a question of choosing the hypothetico-deductive approach to validate or invalidate the hypotheses. We opted for interviews and surveys as the data collection strategy. For the qualitative research, eight semi-structured interviews were conducted with managers. For quantitative research, the selection of our sample is made by the non-probability method and the reasoned choice technique. It should be...