The Yungang Grottoes, carved by imperial commission from the Xianbei 鮮卑 royal family of the Northern Wei Dynasty, represent a pivotal site for understanding Buddhism’s sinicization in China. This study examines the roof ridge decorations from the Yungang Grottoes as material evidence of cultural transformation during the eastward dissemination of Buddhism along the Silk Road. Through systematic analysis of five decorative elements—chiwei 鴟尾, phoenix, garuda 金翅鳥, triangular patterns, and flame beads—this research reveals how indigenous Chinese architectural traditions integrated with Buddhist iconography. The findings suggest that these roof ridge decorations offer compelling evidence of the sinicization of Buddhist art in China, a process that established a distinctive esthetic synthesis balancing foreign religious symbolism with local cultural expression. This localization process created foundational models for Buddhist artistic development throughout East Asia, illuminating the mechanisms of cross-cultural religious adaptation in medieval China.