The invention provides a spanner, which belongs to the technical field of operation tools, and comprises a spanner head and a spanner handle. The spanner head is provided with multiple spanner jaws with different orientations; one end of the spanner handle is rotatably connected with the spanner head; the spanner handle can rotate at 360 degrees on a first plane around a rotary connection point ofthe spanner handle and the spanner head; and a rotary limiting mechanism is further arranged on the spanner handle. The technical problems of complexity and convenience in operation, low safety and low working efficiency in the prior art are solved.