The utility model relates to an auxiliary adjusting device for a converter oxygen lance, and belongs to the technical field of converter oxygen lance equipment in the metallurgical industry. The technical scheme is as follows: the device comprises an adjusting bolt, a clamp, a fixing frame, an adjusting nut and a locking nut, the fixing frame is a square frame. Two symmetrically-arranged clamps are arranged in the square frame, each clamp is connected with an adjusting bolt, the two adjusting bolts are connected to two symmetrical frames of the square frame in a threaded mode respectively, anadjusting nut and a locking nut are arranged on each adjusting bolt, the locking nuts are close to the clamps, and the whole body is of a symmetrical structure. The oxygen lance has the advantages that lance adjustment can be assisted, the stability of the oxygen lance body in the descending process is guaranteed, the falling position of the oxygen lance body is guaranteed, and the situation thatthe oxygen lance deviates and cannot fall into a furnace body from an oxygen lance opening to be blown is prevented. The gun adjusting time is shortened, the smelting period is shortened, the structure is simple, installation is convenient, and operation can be completed only by one person.