The utility model relates to a technical field of instrument specifically is an adjustable angle's spanner, including the wrench end, operating handle and spring catch, spring catch includes movable part and fixed portion, the one end of wrench end is equipped with the opening, its characterized in that wrench end other end is equipped with the fixed plate, be equipped with on the fixed plate withfixed plate looks vertically rotation axis, operating handle is connected with the wrench end through the rotation axis, the movable part is connected with operating handle, fixed portion is connected with the fixed plate, the last operation forearm and operation postbrachium of selling the axle and being connected that be equipped with of operating handle, locating plate one end AND operation forearm is articulated mutually, be equipped with the rectangle spout on the locating plate, be equipped with the locating lever, locating lever one end is equipped with rotatory handle, the other end passes the spout and is equipped with long square slide block, be equipped with the recess into the slider location on the operation postbrachium, the angle of wrench end can be adjusted wantonly, to the space narrow and small, have the fine operation of corner or darker operational environment homoenergetic and improve work efficiency.