This paper focuses on the mold-imprinted brick decorated with a pagoda pattern from the Former Shu  unearthed at Ma’anshan in Deyang. By identifying the pictorial content of the brick and closely examining its 
inscriptions, the study analyzes various types of information preserved on it. Based on archaeological findings and Buddhist scriptures, it is proposed that this brick was likely used in building the underground palace (digong) of a thirteen-story dense-eaved pagoda. The construction of this pagoda appears to have been linked to the cult of Dhāraṇī. The unique nature of such bricks allowed widespread public participation in the pagoda’s construction, forming a collective devotional activity within the region. On a methodological level, due to the lack of relatively complete archaeological context and historical documentation for such research materials, this study aims to explore the historical context of the Ma’anshan pagoda-pattern brick through iconographic analysis, supplemented by comparative archaeological evidence.