Since independence，Senegal has been governed by four presidents：Léopold Sédar Senghor，Abdou Diouf，Abdoulaye Wade and Macky Sall. Whether the transfer of power within the PS or the change of power caused by multi-party competition，it was done peacefully. There are three main reasons for the political stability in Senegal. First，harmonious religious relations in Senegal guarantee healthy relations among social groups，while good political-religious relations ensure political stability. Various religious groups are the checks and balances of government，enabling the government to take into account different interests and concerns when formulating policies. In the process of implementation，government policies also can be supported by religious leaders. Second，Senegal’s political system is reasonably designed. At the central level，the president has maintained a relative advantage over the parliament and the cabinet，which is conducive to leading the stable development of the political situation. Parliament and cabinet also have the necessary power to counter with the president，thus creating an atmosphere of improvement rather than violent struggle. In the central-local relations，the central government exercises necessary control over local elites through financial means，while decentralizing power in local affairs in order to give full play to the advantages of local elites and ensure the stability of local order. Third，the Senegalese army has remained stable for a long time，while its standpoint in political life is relatively neutral.