The utility model discloses an omnipotent flat -nose pliers parallels of adjustable height relates to a jig annex. The utility model discloses a descend the parallels, go up parallels, adjusting screw, locking screw, it links to each other with two fixed cylindrical pin of parallels down through self two cylinder pinhole to go up the parallels, two fixed cylindrical pin guide rails of parallels were done and are reciprocated under upward the parallels can be followed, loosen locking screw through rotating reciprocating of in adjusting screw realization parallels, when parallels to needs are high in the adjustment, lock last parallels through locking screw, realize through the adjustment to last parallels height that the flat -nose pliers is to the fixing mold insert of co -altitude part not, and then solve effectively and drop into a large amount of parallelss problem of management that is difficult for with high costs, realize reducing the processing cost. The utility model disclosesa to descending the parallels, going up parallels, adjusting screw, locking screw material, plane degree, the depth of parallelism, hardness selection control, can improve parallels, last parallels, adjusting screw, locking screw performance and life -span down.