This study aims to address two important questions: will advertising on mobile short-form video apps jeopardize the value perception of luxury brands (RQ1), and if so, how will self-deprecating online reviews eliminate these negative effects (RQ2). An experimental design approach was employed to investigate the proposed research questions. Three experiments were conducted to test the hypotheses. SPSS was used for data analysis. The study 1 finds that compared with traditional media, advertising on mobile short-form video apps shortened the psychological distance between consumers and luxury, therefore has a more negative impact on consumers’ perception of luxury brands. The study 2 reveals that self-deprecating online reviews can eliminate the negative effects of advertising of luxury brands. On the basis of previous research, this paper proves the negative influence of social media on luxury brands in the scene of new social media-mobile short format video application. In addition, it also studies the moderating effect of online comments, especially self-deprecating comments, on consumers' perception of luxury brands. This study outlines theoretical contributions and practical implications for the luxury marketing management and made suggestions for future research in the field of luxury marketing in Social Media.

Under the background of short video spray background, the industry accelerates into the short video marketing. Relying on KOL marketing and e-commerce platforms, a new form of economic development has been opened up. In order to compete for economic advantages, various market players are competing to use various brand communication strategies to make the brand broadcasting strategy gradually become the climate. At the same time, the media technology and communication means constantly enrich the brand communication strategy, which becomes the necessary premise for the enterprise to make profits, and triggers new marketing communication thinking. Through the analysis of the short video brand communication strategy, guide the market players to carry out brand communication in a reasonable and appropriate way and provide marketing reference for them. The paper analyzes the short video brand communication strategy under the short video mouth from the three aspects of phenomenon presentation, cause analysis and countermeasure analysis.