Abstract: The demand on high-performance control network is increasing gradually because enterprises will-carry out the remote manufacturing, management and market operation in the field of industrial control today. In order to realize integration of management and control, more and more device maintenance and management informations will be transferred by control network, which requires higher bandwidth. Though Fieldbus develops rapidly, there are some lacks in aspects of transmission speed and real-time. Recently Ethernet and TCP/IP infiltrate into control field more and more, industrial control network is faced with baptism. Therefore, the status quo of industrial control network, fieldbus technology and mixed distributed control network are analyzed in detail in this paper. In addition, the promotion and innovation of Ethernet and TCP/IP to control network are also presented. Combined with thorough analysis of TCP/IP protocol network intelligent sensor and embedded Internet, Internet-based industrial control network is brought forward. With development of integrated circuit rapidly, Ethernet interface can be embedded into field instruments, the new control network will have huge development foreground.