The popularization of intelligent technology drives the development of intelligent building. This paper focuses on the linkage control technology of building electrical intelligent system. The application of linkage interactive control technology can control the various functions of the building, improve the comfort of the building, save energy and reduce consumption, hence realizing the humanization of architectural design. Intelligentization and other design concepts effectively promote the harmonious development of architecture and environment, and have significant roles on the optimization and improvement of building electrical function. Buildings, as human living environment, through the application of linkage control technology, mainly control the building electrical equipment, maintain electrical safety, and play its function better.