In 2021，the 8th National Congress of the Communist Party of Cuba was held，and new generation of leadership successfully took over the leadership of the country. The corona virus pandemic，economic hardship and materials shortage under the U.S. embargo policy，and the economic chaos suffered in the early days of currency and exchange rate unification pose serious challenges to political stability. Due to the U.S. embargo policy and the rebound of the epidemic，the tourism，the pillar of Cuban economy，is difficult to recover，the economic growth is slow，and the government accelerates the “update” process. The materials shortage has become prominent under the epidemic，and the currency and exchange rate unification has brought high inflation and social instability，which make the government under more pressure. Cuba has continued its diplomatic diversification. The relationship with U.S. remains tense，but Cuba maintains traditional friendship with China，gets closer with Russia，and develops steadily the relationship with other Western countries.