随着嵌入式技术、现代通讯技术的发展以及新一代通讯标准的出现，使得人们使用大规模智能移动设备进行移动计算成为可能。本文针对移动应用提出了一种在物理隔离网络环境下的数据同步方法，介绍了应用的背景，对同步系统进行总体设计，详细说明了数据同步操作的步骤及过程，然后详细论述了同步过程中冲突的检测、处理规则。采用增量式的同步方法，减少了数据交互量；同时，内外网物理隔离，保证了数据的安全性。

The development of embedded technology and modern communications technology, together with the emergence of a new generation of communications standards, makes the use of smart mobile devices for mobile computing possible. This paper presents a data synchronization method in physical isolation environment for mobile applications，introduces the background of the application, designs the overall scheme of the synchronization system, explains the sync process and steps, and describes the conflict detection and elimination in detail. With an incremental approach, the volume of data exchange is reduced, and data security is ensured .