The fragility of the social and economic development and the sensitivity to big powers’ policy have been two major features of Pacific Island Countries（PIC）in the process to achieve sustainable development goals. In 2020，the COVID-19 brought an unprecedented impact to the worldwide. Although the Pandemic did not spread in the large-scale in PIC region，the impact of COVID-19 will be a long-term and far-reaching risk. In recent years，in order to hedge against China’s rising influence in PIC，the United States，Australia and Japan continued to strengthen the foreign policy towards PIC，which has made a profound change of regional power landscape. Under the background of COVID-19，on the one hand，PIC lack the ability to continuously prevent and control the pandemic and achieve economic recovery in the short term，on the other hand，they are subject to the policy choices provided by developed countries to enhance regional influence. Therefore，the contradiction between the PIC demands for sustainable development and the external environment is getting more and more prominent. During the pandemic，China focus on the field of public health and carried out close cooperation with PIC，which is the promotion of building a community of common destiny for all mankind and the result of deepening practical cooperation and comprehensive strategic partnership between China and Pacific island countries.