Abstract: In view of problem that each link of belt transmission in one coal mine of Guizhou province still uses manual monitoring mode and is difficult to realize integrated management for belt transmission, the paper proposed a design scheme of centralized control system of belt transmission based on iFIX. In the scheme, monitoring computer of surface dispatching center and underground PLC equipments both install iFIX configuration software as SCADA system nodes and are connected with industry TV of surface dispatching center; the monitoring computer and the underground PLC equipments are connected with industry Ethernet of mine communication center, so as to complete exchanging and real-time management function for belt transmission data on site. The actual application showed that the system realizes sharing and information interconnection of belt transmission data of coal mine underground and improves safety of underground production.