This study takes the wedding music of the Jiarong Tibetan people as its research object and analyzes it from three aspects: cultural background, wedding procedures, and musical characteristics. The findings show that this musical tradition was formed through the long-term development of a specific regional environment and traditional culture, exhibiting a distinct local character. The wedding presents a “dual-space parallel” structure, with activities occurring simultaneously inside and outside the ritual hall: the interior is centered on religious ceremonies, emphasizing solemnity and sacredness, while the exterior focuses on song and dance, reflecting openness and participation. Chanting music and Guozhuang music correspond to different spaces and functional needs; they complement each other and together form an overall musical structure that moves from the sacred to the secular. Overall, the wedding music of the Jiarong Tibetan people embodies a cultural connotation that integrates sacred and secular elements.