Vairocana Statues or Buddhavatamsaka Sutra illustrations belong to the category of Buddhavatamsaka sutra art and constitute some of the important and common subjects in Chinese Buddhist art. Related works can be found in the Kizil Grottoes, Dunhuang Caves, and Anyang Lingquan Temple Grottoes. Of these sites,the Dunhuang Caves contain the pieces with the longest history, finds with the greatest amount of intact works,and Buddhavatamsaka sutra art that can be interpreted with local historical documents. This paper intends to focus on the Buddhavatamsaka sutra illustrations of the Tang dynasty in the Dunhuang Caves and to instigate a systematic rethinking of the manifestations of religious meaning by consulting relevant literature in Dunhuang documents.