Cross-ownership between banks up to now has always been an intricate issue, leaving many credit institutions unable to resolve satisfactorily. Although the ownership limit has been clearly stated, violating banks have only tried to divest in some cases. However, for the current Vietnamese banking system, the ambiguity in cross-ownership between banks is potentially unpredictable risks, especially the bad debt tension can cause a deviation in process of restructuring the banking system. Thus, cross-ownership includes both positive and negative effects, but it seems that in Vietnam the negative effects are more pronounced.