Internet public opinion has the advantages of fast expression, diverse information and diverse interactive ways. The openness and virtuality of the internet determine that online public opinion has the following characteristics: online public opinion is the most active and sharp part of social conditions and public opinion, but online public opinion cannot be equated with the position of the whole people. With the popularity of the Internet and the emergence of news posts, forums and blogs, netizens in China have an unprecedented right to speak and can express their views and feelings more freely. However, due to the weak legal and moral constraints in cyberspace, if netizens lack self-discipline, it will lead to some irresponsible remarks, such as keen to disclose people's privacy, misleading people with rumors, anti-social tendencies, extremes and irrationality, blind obedience and impulsiveness of groups and so on.

Due to the hidden identity of the spokesperson and the lack of rules and effective supervision, the network has naturally become a space for some netizens to vent their emotions. Frustration in real life, one-sided understanding of social problems, etc. Will use the internet to vent. Therefore, vulgar and gray remarks are more likely to appear on the Internet.