Intelligent manufacturing is an evolving system that covers theories, methods, technologies, and application involved in the whole life cycle of products, manufacturing, and services. Considering the new technologies, concepts, and models emerging in the field of intelligent manufacturing, a system structure for intelligent manufacturing needs to be summarized and proposed to well guide its implementation. This paper constructs the system structure of China's intelligent manufacturing from three dimensions, i.e., a value dimension, a technical dimension, and an organization dimension, and makes a horizontal comparison with the system architectures related to intelligent manufacturing in the United States, Germany, and Japan.The technical dimension reflects that China’s intelligent manufacturing should focus on the integration of industrialization and informatization, the value dimension reflects that the main body of China's intelligent manufacturing is manufacturing activities, and the organization dimension emphasizes that China's intelligent manufacturing should be people-oriented.