With the rapid development of mobile Internet, the widespread popularity of smart devices, and the deep embedding of platform algorithmic mechanisms, short videos have become one of the most influential media forms in the current digital communication...
With the rapid development of mobile Internet, the widespread popularity of smart devices, and the deep embedding of platform algorithmic mechanisms, short videos have become one of the most influential media forms in the current digital communication environment, profoundly changing the ways in which the public obtains information, understands cultural content, and participates in communication. Against the background of the continuous promotion of the cultural digitization strategy and the ongoing expansion of museums’ social functions, short-video platforms have gradually become an important field for museums to carry out public cultural communication, promote digital transformation, and achieve audience development. Through mechanisms such as algorithmic recommendation, feed-based content distribution, interactive feedback, and social diffusion, platforms such as Douyin not only reconstruct the communication logic and visibility structure of museum content, but also promote the transformation of museums from traditional exhibition spaces into digital cultural fields integrating “communication–interaction– participation.” However, in the process of the rapid development of museum short- video communication, problems such as content homogenization, superficial value expression, and insufficient interactive conversion have also emerged. How to seek a balance between the public cultural mission and platform mechanisms has become an urgent issue to be discussed. This study takes the application of short-video platform mechanisms in museums and audience development as its research topic, and takes the official Douyin accounts of the Palace Museum and Sanxingdui Museum as case objects. Based on the SIPS model and audience development theory, this paper discusses the interaction among platform mechanisms, content expression, and audience behavior in museum short- video communication. The research comprehensively uses literature review, content analysis, case study method, and LDA topic modeling to analyze the comment texts of the official accounts of the two case museums, and embeds the LDA topic identification results as auxiliary evidence into the four-stage framework of “Sympathize–Identify–Participate–Share & Spread” of the SIPS model to reveal the audience’s focus of attention, emotional expression, and behavioral tendencies. The study finds that the dissemination of museum short videos is not a process that simply relies on content release to achieve expanded influence, but a dynamic mechanism formed under the joint action of platform distribution rules, content narrative methods, and audience interaction behavior. As a national comprehensive museum, the Palace Museum relies on cultural authority, collection resources, and a mature narrative system to highlight the continuous interpretation of classic cultural resources and the stable construction of public cultural identity in short-video communication. Relying on the mystery of ancient Shu civilization, the topicality of archaeological discoveries, and the uniqueness of local culture, Sanxingdui Museum is more likely to stimulate the audience’s interest in exploration, regional associations, and expressive participation. Although the two museums differ in resource endowment, content characteristics, and communication paths, they both show that the visual presentation of cultural relics, narrative storytelling, professional interpretation, and emotional triggering are important conditions for promoting the audience’s entry into the stages of resonance and identification. The improvement of measurable platform metrics only constitutes a surface phenomenon of audience development, while the substantive change in the quality of the relationship between the institution and the public is the internal indicator of the real occurrence of audience development. Further analysis shows that the current effectiveness of museum short-video communication still largely remains at the level of improved platform visibility and short-term interaction accumulation, and has not yet been fully transformed into stable audience relationships. The main problems are as follows: there is an alignment tension between the content supply logic and the platform recommendation logic; the ways of generating resonance are relatively limited; the conversion chain from identification to participation is not sufficiently complete; the platform interaction structure makes it difficult to support demands for in-depth participation; audience segmentation and differentiated operation mechanisms remain weak; there is a deep contradiction between the public cultural mission and the platform’s commercial logic; and the conversion mechanism from traffic accumulation to audience relationship construction has not yet been formed. Based on the above analysis, this study proposes that the application of short- video platform mechanisms in museums should shift from simply pursuing communication exposure to focusing on audience management. Museums should optimize the content organization mechanism and improve their ability to adapt to platform distribution; enrich the ways of generating resonance and expand the reach boundaries of potential audiences; improve the conversion design from identification to participation and extend the audience behavior chain; reconstruct the interactive support mechanism and enhance the capacity to accommodate in-depth participation; optimize the sharing trigger mechanism and expand the cultural spillover effect of museums; coordinate the public cultural mission with the requirements of platform mechanisms and stabilize the value orientation of content; and establish a long-term operation mechanism for converting traffic into relationships. This study expands the explanatory scope of the SIPS model in museum digital communication scenarios, constructs a research path of “LDA topic identification–SIPS stage interpretation– comparative case analysis,” and provides practical reference for the operation of museum short-video platforms to shift from “traffic acquisition” to “relationship construction.”