The concepts of “others’ construction” and “reconstruction” in cross-cultural communication are essential mechanisms for building the identity of city images in a multicultural context. These processes demonstrate how city images are shaped by external groups’ definitions and representations while being actively reshaped through self-reflection and reconstruction within local cultural contexts. Grounded in cross-cultural communication theory and research on city image dissemination in the digital media environment, this study uses the city as a medium to establish a communication framework of “others’ construction” and “reconstruction.” Through quantitative and qualitative analysis of videos about Chongqing posted by foreign bloggers on YouTube, the study examines how these bloggers construct narratives of Chongqing’s city image through physical presence and digital interaction in a global context. The findings reveal that Chongqing’s city image is primarily represented through themes such as architectural wonders, landscapes of mountains and rivers, three-dimensional transportation systems, spicy cuisine, and cyberpunk-style night views, forming a highly recognizable and multi-dimensional urban imagery. The study further analyzes the interactive mechanisms between “others’ construction” and “reconstruction” in cross-cultural communication and proposes strategies to optimize Chongqing’s city image dissemination. These strategies aim to enhance the city’s global recognition and influence within the international public discourse sphere.