This essay is aimed at researching the communication effects of surrealism posters by using theories from communication, semiology and cognitive psychology. This research employs the method of quantitative research analyzing the questionnaire used by this paper. The prospect of surreal posters in the contemporary ‘spectacle society’ is also discussed. Communication effects of posters are defined as ‘alluring audience’s attention’, ‘being interpreted by audience’ and ‘persuading audience to take action’ in this essay. This paper uses the poster of ‘Get It Louder Exhibition’ as the specific example of surrealist posters and inspects the dissemination of surreal posters by inspecting this specific one.