The invention discloses an electroencephalogram centralized monitoring system for a neonatal intensive care unit. The system comprises an electroencephalogram acquisition device, a video acquisition device, a video storage device, a bedside monitoring device, a report output device, a video centralized storage device, a centralized monitoring server, a centralized monitoring device, a neonatal information database, an electroencephalogram data storage device, a communication device, a working terminal and a centralized display device. The system can acquire neonatal electroencephalogram signals in real time, analyze and process the signals, generate neonatal amplitude integration signals, filter out artifact signals, achieve automatic analysis, early warning, processing and report generation of sleep awakening, convulsion and outbreak inhibition, display the signals on the centralized display device of a doctor office or a nurse station in real time, give an alarm and remind a doctor, and make medical staff master the brain function state of a neonatal under intensive care in real time.