The invention discloses an intermittent on-line monitoring method based on spatial position information. The method includes: step one, checking whether monitoring start time is up, if yes, performing the step two, otherwise, executing the step one continuously; step two, checking whether an on-line monitoring device accords with spatial position conditions for monitoring start, if yes, performing the step three, otherwise, executing the step one continuously; step three, starting the on-line monitoring device; step four, executing measuring, determining and analyzing work; step five, storing monitoring data and organizing monitoring data messages; step six, inserting labels of the spatial position information behind the monitoring data messages; step seven, adding labels of time information behind the monitoring data messages; and step eight, sending the data messages out. By means of the method, long term stability of electric energy can be maintained and low power consumption, quick polling speed and short polling cycle can be achieved.