Abstract: In the maintenance, pre testing, and renovation projects of substations, there may be situations where personnel from the same work location and equipment, or multiple teams working in the same space and site, who do not know each other, work simultaneously. This situation is called cross operation. During the cross operation process, due to work coordination, personnel cooperation, information communication, and other reasons, equipment damage, personnel injury, and other abnormalities and accidents may occur, How to effectively avoid anomalies and accidents in the process of cross operation, control measures are very important. Based on the problems that have occurred in the past cross operation process, I will discuss the methods and key points of control measures. This article has a clear hierarchy, concise language, and prominent focus. Through this article, you can truly master the control measures for cross operation in substations.