In the digital era, short video marketing has emerged as a key tool for destination branding. This study explores how intelligent design elements in short videos, such as sensory appeal, content vitality, and interaction, influence emotional experiences and strengthen destination brand identity. Using the S-O-R (Stimulus-Organism-Response) model as the theoretical framework, we analyze the role of emotional experience in linking these design factors with consumer brand identity. Additionally, we examine how intelligent systems, such as content recommendation algorithms and real-time interaction technologies, enhance user engagement and emotional connection. The findings show that sensory appealing content and interactive design significantly boost positive emotions, which mediate the relationship between user perception and brand identity. This study extends branding theory in short video marketing by highlighting the role of intelligent design in shaping emotional experiences. It also provides practical insights for marketers to optimize emotional engagement through intelligent content design and personalized video recommendations.