The bamboo-cage loom in Guangxi province in China is a great invention in the textile history of the Chinese minorities. However, the previous studies on the bamboo-cage loom were not very clear, and led to much misunderstanding. Based on our investigation on the spot of some ethnic villages in Guangxi province and in Guangxi Museum of Nationalities, at first, the structure of bamboo-cage loom was introduced in detail. Secondly the characters of Zhuang brocade on the bamboo-cage loom were presented. At last, the operational processes on the bamboo-cage loom were explained.