The invention discloses a system and a method of multi-standard base station interconnection, wherein, multi-standard base stations are connected by means of uniform interface units which provide basic physical transport bearing and uniform transport protocol stacks, namely, uniform logic interfaces, which are used for transporting high-level application protocols to support the information interaction among multi-standard base stations, even among base station child nodes inside each multi-standard base station, such as load information, resource using information, interference information, switch process signaling messages, data forwarding and so on. The high-level application protocols born in the uniform transport protocol stacks are primarily user plane protocols and control plane protocols. The realizing function of the interface units is also provided among all the base station child nodes inside the multi-standard base stations. As the interface units which are internally provided by the multi-standard base stations adopt uniform transport protocol stacks, the system performance can be radically improved if similar uniform logic interfaces are provided among the multi-standard base stations.