During these last decades, insecurity has been one of the most relevant issues on the political circle as well as on the academic agenda. The security implementation in the Sahel is a complex issue and must be passed by a reflection and reciprocity of the efforts of the different countries and the different partners to assure the prevention against terrorism armed groups, the organized crimes and narcotics. These implementations meet some challenges that are political, socio-economic, military and strategic order, the mutual efforts of the G5 Sahel countries member must be an essential priority, because its results will make to emerge positive profits of the setting in work of the territorial redesign strategies. The G5 Sahel or the G5S is a young institution that has been put in place while a summit on 14th to 17th February 2014 with the coalition of five countries: Mali, Burkina-Faso, Niger, Mauritania and Chad. These countries are faced to the insecurity dangers in their Sahel’s space since some years, and it is through this initiative of common efforts that the G5 Sahel was created. Most of these countries are faced to insecurity challenges in their territory and this work is a way to highlight the efforts that the G5 Sahel and its different partners have established for the security implementation in the Sahel of its countries member. We also focus this work on the fact that different points are seen as blockage to the objective of functioning of this coordination framework. This work is an advantage for us to edify our two main interest points, the one based on security which is a common vision of the G5 Sahel founding’s purpose and the other that focuses on challenges is a determinant aspect whose its resolution should be an emergence of the isolated zone of the G5 Sahel.