Since the first confirmed Covid-19 case broke out in Brazil in early 2020，the coronavirus pandemic has spread rapidly in Brazil，and various social contradictions and problems have been superimposed and concentrated on each other. Facing the triple impact of the health crisis，social conflicts and economic stagnation，Brazil’s domestic political turmoil has further intensified，mainly manifested in the tension between the state and the federal government，the tension among three powers，and the increased differences between the left and right parties. In addition，the 2022 Brazilian presidential election year is approaching，the political parties will struggle more and more fiercely，and the trend of political polarization and public polarization will become increasingly prominent.