Abstract:[Purpose/significance] Under the new media environment,dissemination of network public opinion on emergencies is a new problem faced by governments and industry organizationsResearch on the information dissemination of network public opinion in mobile environment is helpful to further analyze the network public opinion dissemination patterns[Method/process] This paper establishes a dissemination model of network public opinion according to the changing characteristics of information in different stagesUsing the topic of “South China Sea Arbitration” in Sina Weibo as the data source,the paper connects Sina API open platform to retrieve 47749 pieces of network public opinion by a Java programConsidering differences of network public opinion of emergencies between mobile and nonmobile terminals,the paper conducts an analysis for evolution law,early warning rule,evolution model and using patterns of tools by Matlab[Result/conclusion] Results show that the dissemination of mobile terminal is faster,deeper and widerThis study also offers guidance for regulators to supervise and control network public opinion on emergencies under the new media environment