The invention discloses a shielded gate locking manual-electric operation switching device. The switching device comprises an electric shaft, an electric driving part, a manual driving part and a connection shaft pushing component, wherein the electric shaft is provided with a movable connection shaft and rotatably supported on a shielded gate; the electric shaft is in transmission connection with a gate locking device of the shielded gate, so that the electric shaft drives the gate locking device to act when being driven to rotate, and opening and closing of the shielded gate are achieved; the manual driving part penetrates through a shield-sealing material layer of the shielded gate; the electric driving part is in transmission connection with the electric shaft; the connection shaft pushing component is connected with a connection shaft, so that the connection shaft pushing component acts to enable the connection shaft and the manual driving part to be separated or connected; and when the electric driving part does not act, the connection shaft pushing component acts so that the connection shaft and the manual driving part can be connected, and then the manual driving part drives the electric shaft to rotate. According to the shielded gate locking manual-electric operation switching device, not only can no-spare-stroke switching of manual gate opening and closing be ensured, but also convenient switching of manual operation and electric operation can be ensured.