The YCA-ESG capacitive high-voltage live display device (panel type) is in line with the GB25081-2010 and DL / T538-2006 standard in power industry, which can timely reflect the information of the voltage state at the place where the switching devices are installed, and have nuclear phase function. At the same time, the display panel is of front-end detachable type and plug-in type of rear connector, fully meeting the requirements for replacing the live display with no power interruption, and the short-bridge connection is adopted, which has greatly improved the service life of the device.