本文介绍了基于以太网的新型多媒体光纤工业监控网的设计方法，探讨了其组网原理和实现功能，提出采用以中继式集中器和交换式集中器相结合的双层树型拓扑结构的组网方式，并定量地分析了网络的可用性。结果表明该网络适用于多媒体工业监控系统，可靠性高，成本低，可满足多媒体信号的传输。 This article introduces the design method of a new multimedia optical fiber industrial monitoring network based on Ethernet, discusses its networking principle and realization function, and proposes to adopt a double-layer tree topology combining a relay concentrator and a switching concentrator Network mode, and quantitative analysis of the network availability. The results show that the network is suitable for multimedia industrial monitoring system with high reliability and low cost, which can meet the requirements of multimedia signal transmission.