本文完成了基于数据库的模块化远程测控系统的总体方案的设计，对整个系统进行各个功能模块的划分。采用VC 提供的MSComm 控件实现了现场设备下位机和服务器端上位机之间进行串口通信。然后探讨了数据库技术，采用SQL Server2000 作为系统的数据库，结合ADO 技术实现数据库的访问。对系统的实时性和安全性问题进行了分析和研究。关键字: 测控系统；数据库；VC；ADOAbstract: After raising the general design scheme for remote control system, the subject realize the communication between MCU and Server by adopting MSComm Control provided by Visual C. The subject divided the whole software into several functional modules, in which SQL2000 was adopted as the database for remote control system and ADO technique was applied to access to the database. Researched and analyzed the questions of the real-time character and safe character of the system.Keywords: Measuring and Control System; Database; VC; ADO