The utility model relates to a combined wire replacing rod. A base wire replacing rod is connected with not less than one adjusting wire replacing rod to combine series wire replacing rods which need different length, wherein inner screws with rabbets are arranged on one end head of the base wire replacing rod; inner screws with rabbets are arranged on one end head of the adjusting wire replacing rod and outer screws with rabbets are arranged on the other end head; the heads and the tails of one base wire replacing rod and more than one adjusting wire replacing rod are combined, connected, tightened in a rotary mode and positioned by a small rabbet to form the wire replacing rod of a submersible motor of required specification length. The utility model has the advantages that preparing all wire replacing rods for each specification is not need; each series only needs to prepare one base wire replacing rod and four kinds of adjusting wire replacing rod, five kinds, to cover twenty-four specifications; due to adopting a combined wire replacing rod, the production management is convenient, the manufacturing floor is saved and the manufacturing cost is reduced simultaneously.