In this study, we scientifically analyzed some metal Buddha statues of the Kingdoms of Nanzhao and Dali in order to study their methods of production. The results show that the lost wax casting technology was mainly used for making various bronze Buddha statues and the materials contain a variety of metal elements. For example, the Acarya Guanyin statues and the other bronze statues are characterized by copper alloys containing arsenic; the gold Buddha statues were mainly made of gold and silver alloys; and the small bronze Buddha statues were made of complex alloys. According to analyses of inscriptions and paintings, these metal Buddha statues were mainly made by local artisans in Dali.