The study sets up a research question that whether comments on social media affect their perceptions of Lesbian Gay Bisexual Transgender (LGBT) group. It was a gap and there were no people to investigate this question in the past. Also, the study used Chinese social media, Weibo, to collect the comments of the LGBT group. And then, the study sets up a questionnaire interview to get data from different people. After that, the data was analysed by some charts and SWOT. These charts explored the relationship between ages or gender and word of mouth, which could prove that word of mouth influenced people's perceptions. The summary, which was reached by charts and SWOT, commented that social media could change people's attitudes toward LGBT groups and make them accept the LGBT group more. Moreover, this paper also proved the study's hypothesis that social media made people accept the LGBT group more is precise. What is more, the reason why the study had this research question is just that the appearance of the drama of Tanbi made the LGBT group become flourish. Moreover, the implication of the research was finding people's perceptions of LGBT and their factors of change.