The motivation of public opinion on internet shows and reflects the government credibility，which is an important part to strengthen government power ability. It is difficult to maintain the government credibility which is caused by weak mobilization ability for public opinions and unprecedented stress to cope with public opinions under the conditions of the particularity of network communication. This report summarizes the basic trend of online public opinion in Guizhou 2014 and analyzes the measures which are took by government when studying，responding，communicating，disposing and repairing the network opinion after combining three typical network opinion events. This report puts forward the countermeasures to improve the government credibility from the perspective of network opinion.