Under the UNFCCC, climate change is defined as climate change that is attributed directly or indirectly to human activity, modifies global atmospheric composition, and adds to the natural variability of climate observed over comparable time periods. This definition is different from that of the IPCC, which says that climate change refers to any change in climate whether it is human or natural. Vulnerability is the degree to which a system is sensitive to the adverse effects of climate change, including climate variability and its extremes. It is a function of the nature, magnitude and rate of the climate change to which the system under consideration is exposed, the sensitivity of this system and its capacity for adaptation.Vulnerability is thus a function of physical and socio-economic characteristics. One of the characteristics of Guinea is the very marked contrast between the different natural regions in terms of socio-economic conditions, population density, rainfall and hydrological regimes, relief, soil distribution, and wildlife. Flora. The populations of these different zones are to varying degrees, exposed to poverty (53% of the population live below the poverty line), to variability and to climate change (droughts, floods, extreme temperatures, disruption of the rainfall regime, etc.).Guinea, as a party, is receiving support so that, like other least developed countries, lacking the capacity to address the proven vulnerability of its resources and socio-economic groups, it is preparing its NAPA. This work falls within this framework and aims to outline urgent and immediate adaptation measures, any delay of which will cause increased vulnerability or increased cost. The document produced is the National Action Plan for Adaptation to Climate Change PANA. The document produced is structured as a foreword by His Excellency the Minister of Agriculture, Livestock, Environment, Waters and Forests, an introduction, five chapters, a conclusion, a list of bibliographical references and appendices.The first chapter provides the national context for NAPA: physical presentation, socio-economic aspects, and environmental constraints, institutional and legal framework.The second chapter deals with the NAPA framework. It outlines the climatic risks identified during the regional public consultation workshops, describes their consequences on means and modes of existence, and indicates their trend in the four natural regions. It establishes the vulnerability of socio-economic groups presents the predictable trends of each climate risk and ranks them in order of sensitivity. It shows the integration of NAPA into sectoral development policies and synergy with other multilateral environmental agreements. Finally, this chapter briefly presents the purpose, objectives and constraints of the implementation of the NAPA.The third chapter deals with basic needs for adaptation. Several options have been proposed by natural region. The in-depth analysis of these has allowed them to be grouped into thirteen adaptation options that have been weighted, prioritized and ranked according to six criteria including adaptability, coherence with local development plans, synergy with multilateral environmental agreements. . Keywords: Public Policy, Republic of Guinea DOI: 10.7176/RHSS/12-11-03 Publication date: June 30 th 2022