This study explores when and how the warehousing system 倉庫制 in the Mongol Empire (1206~1370) had been established, developed, and administered. The warehouse, as an administrative service to accumulate and redistribute treasures, shows the relationship between the procurement of imperial materials and the circulation of commodities as well as the great Qan’s financial geography. The study examines the way in which the Mongol Emperor of Qa’an procured and controlled materials and treasures, and therefore to characterize the Mongol’s development of its own, especially in the fiscal finance. The first Mongol warehouses, balaqat in Mongol, were set up by Ogodei Qa’an in Mongolia in 1229. They consist of grain-houses (倉 cang in Chinese, anb?r in Persian) and treasuries (庫 ku in Chinese, khaz?na in Persian). Since Qubilai Qa’an sat on the throne in 1260, warehouses were increasingly built up. The number of grain-houses increased with the consolidation of the Southern Song in 1279. While land taxes 稅糧 traveled from Jiangnan provinces on the sea route to a capital city of Dadu 大都, the main base of grain supply was moved from Qiansicang 千斯倉 in the northeast to Wansinancang 萬斯南倉 in the south. Four Imperial Treasuries of Trillion 萬億四庫 beside Jishuitan 積水潭 storing valuables such as paper mo...