In the age of the Internet，new media such as Weibo and WeChat have become important places of public opinion. Hot issues are exposed in new media at first time，which will spark intense discussion later immediately. During the discussion，some problems will be discovered，such as the citizens’ media literacy. This research took “Harbin expensive fish” event as analysis object，and try to identify and compare the number、content and several aspects of reports and to analyze what social responsibility that new media，government and citizen should undertake.