The design principles and ideas of an interactive structural system are discussed. The three-step design approach

from business architecture to system architecture (data and technique) and then to integrated architecture

is adopted. Firstly

the business architecture is developed on the basis of integrating and consummating the original business system by taking into account the demand for the development of interactive smart power utilization. To support the business architecture

data and technology architectures are then proposed. The contents of each subthematic domain in the data architecture are specifically designed

while key technologies involved in the technology architecture are analyzed. Finally

the integrated architecture is established for data

service and enterprise application integration. This work is supported by National Natural Science Foundation of China (No． 51277052

No． 51107032

No． 61104045) and State Grid Corporation of China (GF-K/YD13006-YD).