The present disclosure discloses a protection cover device for socket, which includes a housing, a protection cover which is arranged in the housing, and a torsion spring which is configured to reset the protection cover, the housing includes a bottom plate and a faceplate spaced apart from the bottom plate, the faceplate is provided with a first insertion hole and a second insertion hole, the bottom plate is provided with a first through hole and a second through hole; the protection cover is provided with a first driving slope and a second driving slope that guide the protection cover to translate along a distribution direction of the first insertion hole and the second insertion hole, the protection cover is further provided with a probe hole, and the torsion spring includes a spring body, a first swinging arm and a second swinging arm.