  An event display software SERENA has been designed for the Jiangmen
Underground Neutrino Observatory (JUNO). The software has been developed in the
JUNO offline software system and is based on the ROOT display package EVE. It
provides an essential tool to display detector and event data for better
understanding of the processes in the detectors. The software has been widely
used in JUNO detector optimization, simulation, reconstruction and physics
study.
