The utility model discloses an automatic monitoring device in power scheduling sub -station, including the monitoring device body, the monitoring device body includes sub -station control box and master station's control box, wireless transmitter is installed to sub -station control box one side, the master station installs wireless receiver in control box one side, wireless transmitter and wireless receiver wireless connection, be equipped with controller, current transformer, voltage transformer, data acquisition device and signal conversion equipment in the control box of sub -station, be equipped with a central processing unit and a storage device in the controller, current transformer and voltage transformer pass through parallel circuit electric connection. The utility model discloses a current transformer and voltage transformer can detect the condition of sub -station power scheduling to the storage device in the controller carries out analysis processes in transmitting the master station to, owing to can save the numerical value that current transformer and voltage transformer detected, so that the staff transfers original data.