The invention provides an uninterrupted metering switching device for live replacement of an electric energy meter and an electric energy meter replacement method. The switching device provides a turnover place for alternating electric energy metering of new and old electric energy meters during live replacement of the electric energy meter, and the safety and the electric energy metering continuity in the live replacement process of the electric energy meter are ensured. The switching device comprises a shell, a voltage input terminal, a current input terminal and electric energy meter binding posts, wherein the voltage input terminal and the current input terminal are arranged on the shell, and the electric energy meter binding posts are at least connected with two electric energy metertail interfaces. The voltage input terminal and the current input terminal are connected with a metering loop. By arranging the electric energy meter binding posts corresponding to the positions of the meter position wiring ports of the intelligent electric energy meter, the electric energy meter is directly plugged and fixed on the device through the binding posts, live replacement of the electric energy meter is achieved, repeated wiring is not needed, the operation is simple, and the safety in the live replacement process of the electric energy meter is ensured.