In resent years, promoted by the border trade, the cross-border circulation of RMB, what has been involved in the capital items of some countries has come into being accordingly. However, in view of the current economic situation in China, the Internationalization of RMB has not matured yet, and at most it can only be regarded as a course of gradual advancement. Only the regionalization of RMB is the applicable objective to be established for China in the near future. Especially, it is high time to analysis the phenomenon and causes of deposit volume of RMB in the Vietnam, Laos, and Burma sub-region. Therefore, this thesis is under the guidance of econometrics way, gives a systematical analysis and explains the relation between RMB deposit volume and other factors in the sub-region.