The invention discloses a real-time checking system of an automated ammeter calibrating device, comprising a calibrating device assembly line operation platform and several real-time checking standard instruments, wherein the respective real-time checking standard instruments are configured to check calibrating devices on a calibrating device assembly line in real time, are distributed at one side of the calibrating device assembly line, and are communicated with the calibrating device assembly line operation platform via Ethernet, and the calibrating device assembly line operation platform is configured to manage the calibrating devices on the calibrating device assembly line, display real-time performance statuses of the respective calibrating devices on an operation interface, automatically perform an isolation operation on a calibrating device with unqualified real-time performances, stop an ammeter calibrating task of the calibrating device, and meanwhile push failure information and give an alarm. The real-time checking system of the automated ammeter calibrating device disclosed by the invention can automatically test performances of the calibrating devices in real time, realize in-time maintenance in case of finding a problem and ensure reliable operation of an entire automated ammeter inspection line, and has a good application prospect.