摘要：In the thirteenth century the Mongols created a vast, transcontinental empire that intensified cultural, art, craftwork, garment and commercial contact throughout Eurasia. Hats were so indispensable parts of formal Mongol dress that were seen as a symbol of Mongol traditional garment. Roughly Mongolian men＇s headgear can be divided into two groups, which are Li and Mao. In addition, Mongolian women＇s Gu-gu-gwan, a kind of bonnet, was the head-dress for the empress, concubines of the emperor, and wife of high ranking ministers. This study, based on the analysis of image resources and existing evidence, discusses the hats of Yuan period in the context of its group, origin, decoration and cultural influences.