Socket wrench

The utility model relates to the field of hardware and discloses a socket wrench comprising a socket body and a socket upper cover. The socket body is hollow; the external wall surface of the upper end of the socket body is provided with a thread; the socket upper cover is spirally connected with the top end of the socket body via the thread; the center axis of the socket upper cove is overlapped with the center axis of the socket body; and a nut bayonet matching with the nut is arranged right in the center of the socket upper cover. The socket wrench is compactly structured with convenient operation and can be conveniently used in narrow space with less time and labor; and by the use of the socket wrench, work efficiency of detachments of water charging and discharging fittings of sanitary wares can be improved and high use performance is provided.