This study examines the role of new media in resource mobilization and political opportunities within the context of the Sunflower Movement in Taiwan. Through an analysis of the impact of new media at various stages of the movement and its influence on resource mobilization and movement development, it is observed that new media played a significant role in expanding the movement's political opportunities and facilitating efficient resource mobilization. However, it is also noted that new media contributed to the dissemination of negative information in the later stages of the movement, accelerating resource dissipation and the decline of the movement. Therefore, the role of new media in modern social movements transcends mere resource or tool status, presenting a new paradigm that warrants sustained and in‐depth scholarly attention.