This paper aims to interpret the media's influence on customer behavior within the Credit Suisse Group from the vantage point of social psychology, elucidating the underlying drivers of financial decision-making in the age of mass media. Through an analysis encompassing the relationship between financial decision-making and social psychology theories, the distinctive features characterizing Credit Suisse Group's customer behavior, and the impact of media discourse on customer conduct, this study delves into the role of social cognition in shaping customer behavior as well as the affective ramifications of media discourse on customers. The findings underscore the pivotal roles of social cognition and media discourse in financial decision-making. This study holds significant theoretical implications and practical relevance for comprehending the impetuses behind financial decisions and the sway of mass media on customer behavior.