In the early part of 1999,a coin vault was discovered in Xu Chang,the range of the coins in it is from the Ban Liang coin in Han Dynasty to the “Tian Fu Yuan Bao”in Hou Jin Dynasty,some of them are rather worthy.These coins had some consult effects for studying the structure of circulating currency in Hou Jin Dynasty. In the early part of 1999, a coin vault was discovered in Xu Chang, the range of the coins in it is from the Ban Liang coin in Han Dynasty to the “Tian Fu Yuan Bao” in Hou Jin Dynasty, some of them are rather worthy.These coins had some consult effects for studying the structure of circulating currency in Hou Jin Dynasty.