The invention discloses a portable transformer neural point monitoring device used at a high place, and belongs to the field of high-place transformer monitoring. By the portable transformer neural point monitoring device used at the high place, an opened sensor is arranged on a rotation rod when an opened current monitoring device is arranged during high-place transformer monitoring operation, high-pressure nitrogen is injected to a movable air guide rod through a high-pressure gas injection hole, the high-pressure nitrogen is transmitted to a flexible connection pipe by the movable air guiderod, a compressed air rod in a fundamental arm is started, so that a moving rod is driven to ascend.