Textile research is a tangible way to examine a society like Goguryeo. Mural paintings of Goguryeo tombs are the essential and vivid sources for Goguryeo’s textile research. Clothing in the murals has been paid significant scholarly attention especially in relation to migration and resettlement issues. Despite the importance of textiles, research on textile production in Goguryeo has not been conducted to the extent it has for Baekje or Silla. This is because so few pieces of textiles survive. It is also because of the lack of research on textile-producing processes. However, there are materials that inform us about textile production in Goguryeo. We find two images of looms in Goguryeo murals, approximately 62 spindles and approximately 15 loom weights from the military bases of Goguryeo. Further, a pattern loom from the Han dynasty has been excavated recently; it might help to understand Goguryeo loom and textile production. The paper will demonstrate the textile-producing process in Goguryeo according to written records. After that, it will try to clarify the Goguryeo loom structure based on images of looms in murals by comparing Han-Wei China’s looms. The goal of this paper is to propose that by examining textile production of Goguryeo through murals of loom images and by comparison with Chinese looms we finally begin to understand the process in Korea.