Today, in the digital era, all walks of life have diversified development under the penetration of information technology, and the traditional construction industry is inevitably combined with information technology to move toward the direction of intelligent construction. As a broad concept, intelligent construction includes many theories and multiple directions of research, from design to construction to post-maintenance, while flexible construction focuses on the organization of production mode. In this paper, through the comparative analysis of intelligent construction and flexible construction, the framework of intelligent construction and flexible construction is established to deepen the understanding of the two modes, so as to correctly control the direction of intelligent development, and provide a basis for the construction mode of the intelligent era.