This report sorts out the communication quantity and tonality distribution of Chinese automobile brands in 2017 and january-june 2018，analyzes the communication status of Chinese automobile brands，summarizes the trend of public opinion communication of Chinese automobile brands in 2017 and january-june 2018，and shows the development characteristics of public opinion communication trend of Chinese automobile brands.The list shows the proportion of positive and negative public opinion voice and public opinion communication of the whole brand.Among them，the volume of public opinion reflects the intensity of brand communication，and reflects the degree of brand attention.The proportion of positive and negative public opinion communication is related to the brand reputation. The higher the proportion of positive，the better the brand reputation.If the negative proportion is higher，it indicates that the voice of dissatisfaction to every aspect of the brand is more prominent during the monitoring period.