In a socio-political context characterized by a surge of violence in recent decades in the region of the Great Lakes (Burundi, Rwanda and Eastern DRC), solutions research have been undertaken at various levels: legal, political, diplomatic and military. But it is clear that the research did not get the desired effect. For this purpose, a focus on the contribution of civil society as a unifying element of peace and regional integration by adopting a functionalist approach seemed necessary. Civil society is not considered as a panacea for the promotion of peace, but as a means to which it would be appropriate to linger. Civil society is thus a factor contributing to the regional and peace integration. It is translated through the specificity of its action and the trust it enjoys with the populations. Furthermore, civil society plays an important role at the regional level in the reconstruction of the social fabric which expression can be seen through a comprehensive framework. However, it is clear that socio-political, ethnic and economic pressures contribute more to limit its action.