With the development of media, the information acquisition of the public has entered the era of multi-channel information perception. The complexity of the public information sources and the chaos of the information structure greatly enhance the difficulty of building city brands. The design and introduction of the SOR (Stimuli Organism Response) model can break through the information cognitive barrier of the audience, plant the city brand image into the perception system of the audience, and achieve the goal of building city brands. Based on the SOR model, SPSS data analysis, literature review, and exploratory research were used to conduct experiments and track specific audiences. Through the stimulation and adjustment of the SOR model, the effect of information cognition was improved. As a result, through the application of the principle of multi-channel information perception, the fragmentation of the city brand image and the splicing of various themes such as the city periphery, the combination of multiple perspectives of localization, and the integration of audio-visual, and the combination of taste-integrated multi-channel communication units, a "structural" urban image communication framework was constructed, which subverted and reconstructed the urban image. In addition, an efficient SOR model was built based on multi-channel information perception, which successfully improved the quality and speed of city brand building. In conclusion, under the current multi-channel information perception environment, the information acquisition of the audience is very chaotic, and it is difficult to build the city brand. It is helpful to spread information more quickly, better, more continuously and more steadily, and realize the ultimate goal of shaping the brand of urban aesthetics.