The invention discloses a wire clamp which is used for fixing a wire harness. The wire clamp comprises a body. A first clamping groove is formed in the outer surface of the body. The first clamping groove comprises a first groove section and a second groove section which are distributed in the groove depth direction. The first groove section is arranged close to the groove notch of the first clamping groove. The body comprises a first groove section and a second groove section. The groove width of the first groove section is larger than that of the second groove section. Limiting structures are arranged on the inner side walls, close to the groove notches, of the first groove section and the second groove section. The limiting structures are used for limiting a clamped object to be separated from the first clamping groove at the groove notch. The body is further provided with a fixing structure used for fixing the wire harness. According to the wire clamp, the first groove is formed inthe body, so that the wire clamp can be clamped on sheet metal parts with different thicknesses. The fixation of the wire clamp is facilitated, and the application range of the wire clamp is widened.