The public opinions in 2020 were characterized by a prominently rising status of the mobile public opinion field，an enhancing role of mainstream media as an authoritative information source，and the promotion of video contents and platform influences. Under the shock of the Covid-19 pandemic to the economic and social life，the public opinion field was marked by overlapped public sentiment issues at home and abroad，various and constantly emerging topics on people’s livelihood pressure，and increasing popularity of enterprise related public opinions. Though the overall public opinion ecology presented a positive development trend，there were still multiple challenges. Therefore，continuously strict and more refined regulation is required for the public opinion ecology governance.