The 19th National Congress of the CPC ，as the stage of building a well-off society in an all-round way，a grand meeting held in the key period of the development of socialism with Chinese characteristics.It not only attracted the eyes of Chinese netizens，but also affected the global public opinion，the political and theoretical circles.This study systematically analyzed the network data within 10 days before and after the 19th National Congress of the CPC，sorted out different platforms，different periods of communication performance and select the network public opinion on the nineteen conference of wind report analyzes a case.