The invention discloses a workpiece clamp capable of directly achieving positioning without depending on workers and extra tools. The workpiece clamp solves the problem that according to a wire cutting clamp in the prior art, horizontal positioning of a workpiece has to depend on extra tools. According to a novel chopstick barrel, the lower end of a barrel body is provided with a water filtering frame, and the bottom of the barrel body is connected with a water collection cup. The workpiece machining clamp comprises a substrate, a standard base plate and a sliding clamping plate which is opposite to the standard surface of the standard base plate and arranged on a sliding clamping base are arranged on the substrate. The sliding clamping base is connected with the substrate in a sliding mode, a positioning bolt is arranged on a side of the sliding clamping base and is tightly attached to the side edge of the substrate under a tightening state, a limit plate which partially extends towards the direction where the sliding clamping base is located is arranged on a side of the standard base plate, and the surface of the limit plate close to the standard base plate is vertical to the standard surface of the standard base plate. The workpiece clamp is suitable for being used in occasions where an original wire-electrode cutting clamp is suitable, and has the advantages of being capable of achieving quick clamping and loosening, capable of clamping multiple workpieces, and the like.