Public opinion refers to people’s attitude and reaction to an event，which reflects people’s preferences. In 2015，there were many big events in the media industry，and they have attracted a lot of attention. This report chooses four representative events for analysis，turnover tide in traditional media the whole industrial chain development of IP，more stringent copyright regulations and the boom of news APPs. Based on the analysis of the four events，the report provides a reference for further understanding of media investment.