The utility model discloses a wiring clamp used for electrically connecting two wiring blocks. The wiring clamp comprises a first clamp body formed by a first cross bar and a first vertical rod, a second clamp body formed by a second cross bar and a second vertical rod, and a sleeve, wherein the sleeve sleeves the first vertical rod in a fixed manner and sleeves the second vertical rod in a sliding manner, the first cross bar and the second cross bar are provided with a first conductor and a second conductor respectively, the first vertical rod and the second vertical rod are provided with a first wiring post and a second wiring post respectively, both the first clamp body and the second clamp body are provided with wire holes, the first conductor and the second conductor are electrically connected with the first wiring post and the second wiring post respectively through wires penetrating through the wire holes, and a return spring is connected between the first cross bar and the second cross bar. Under the action of an external force, the second cross bar approaches the first cross bar while the return spring is compressed; and after the external force is withdrawn, the return spring compels the second cross bar to be away from the first cross bar so as to enable the first conduct and the second conduct to be pressed against the two wiring blocks respectively, thus to realize electrical connection. Therefore, the wiring clamp provided by the utility model can be safety and rapidly connected with the two wiring blocks.