Among the most influential online public events in 2015，the negative public opinion pressure has decreased，the positive opinions increased in proportion，and the consensus was improved. Political affairs and illegal acts were the major public events. The role of microblogs，Wechat，and applications has enhanced. Traditional media has deeply infused into the public opinion field through its transformation. The impact of the verified opinion leaders decreased，while more voice from the mainstream users can be heard. There was a slightly elevation of the proportion of public events with rumors，which occurs mainly in the mobile internet field. There was a resonance among national public opinion，while there was a increase of attention from the international media. Online social communities were active，and the professional public opinion increased. The reverse of public opinion has frequently appeared. Industry capitals and business institutes mediated the social opinion and jeopardized the steadiness of the public opinion. Ethos behind the online public opinion has greatly influenced the orientations of the opinion development and the evolutional paths of the public events. There was an increase in the intervention of the national ministries. Efficiency of the governmental interventions has increased，resulting in an enhanced opinion leading capacity in emergent public events. The central government paid great attention on internet governance，so as to promote a healthy and sustainable online social environment. Due to the complexity of the international and national situations of politics and economics，there will be more challenge in the governance of online social opinion in 2016.