The computer-based LF electrode regulating control system of Masteel’s No. 4 steelmaking and rolling works has greater advantages over conventional control systems with PI regulators. The general situation, backup and restoration and application in daily fault treatment of the computer-based LF electrode regulating control system are introduced.%马钢第四钢轧总厂LF电极调节控制系统是基于计算机的控制系统，较以前的PI调节器控制系统有很大的优势。介绍了马钢第四钢轧总厂LF电极调节控制系统的概况、备份与恢复以及在日常故障处理中的应用。
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