The invention belongs to the technical field of electric power dispatching automation, in particular to a D5000 alarm message reminding system and method across an I/III/IV area of a power system, thesystem comprises an alarm information acquisition module arranged in the I area, an alarm information monitoring module and a mailalarm server are arranged in the zone III, a mail alert station anda mailalarm client located in zone IV, the alarm information collecting module transmits the alarm information to the alarm information monitoring module through the information synchronization mode,the alarm information monitoring module generates an alarm file, which is transmitted by the maillarm server to the mail alarm workstation through FTP. After the maillarm client reads the alarm file,the maillarm client sends the alarm file to the intranet mailbox of the operation and maintenance personnel in the form of e-mail, and triggers a new e-mail short message reminding. The invention notonly meets the safety protection requirements of the electric power monitoring system, but also ensures the uninterrupted monitoring of the running state of the D5000 system by the automation personnel.