本文介绍了一种采用Rabbit 3000 控制芯片为核心的嵌入式以太网网关的设计方法与实现，设计了RS232/485 总线、Lonworks 总线以及以太网的接口硬件电路，对嵌入式TCP/IP 协议栈原理与运行机制以及软、硬件实现作以详细介绍，从而实现智能设备与以太网的数据传输，本装置组网能力强，通信传输可靠，实时性高，极易推广使用。关键词：Rabbit3000；以太网；TCP/IP；网关Abstracts: The method of design and implementation of Embedded gateway on industrial Ethernet are introduced and the gateway is designed with Rabbit 3000 as the central controller, and made a detailed briefing on the RS232/485 , Lonworks and Ethernet interface hardware circuit design, The principle of embedded TCP/IP protocol and its operational mechanism and implementation of its soft-hardware are described. The equipment can implement data transportation between the instrumentation and Ethernet and it has high network configuration, high reliable communication transportation, good real-time and widerange use.Keywords: Rabbit 3000, Ethernet, TCP/IP, Gateway