As a symbol of positive meaning，“Zheng Neng Liang” plays a significant role in our daily life. With the development of the network media，“Zheng Neng Liang” on the internet has become one of the most important topics of the society. However，the network space is not just an automatic aggregation. Different information fields compose the public opinion fields of diverse characteristics，showcasing the dissimilar features of “Zheng Neng Liang”. This research is based on the model of netizen emotion and attitude，constituting the index of the “Zheng Neng Liang” on the internet and comparing the different features of these four network information fields. The result reveals the conclusion that different network information fields demonstrate various features in the aspects of netizen emotion，attitude and the preference of public issue.