本文主要介绍了一个基于RMI (Remote Method Invocation)机制的分布式时钟系统的设计过程。首先分别介绍了RMI和分布式系统的基本原理，然后根据实验要求完成系统设计。主要是实现了能够在不同机器上显示和更新当前的时间，并且在开发和运行时能消除客户端与服务器端的紧耦合性。-This paper mainly introduces a design process of a distributed clock system based on RMI (Remote Method Invocation). Firstly, it introduces the fundamental principle of RMI and the distributed system, and then, completes the design according to the experiment requirements. The design is able to display and update current time in different machines. And it also eliminate the tight coupling between client and server during developing-time and running-time.