The invention provides a cup holder lifter. The cup holder lifter comprises a cup holder, a driven lifting mechanism and a driving lifting mechanism. The driven lifting mechanism is used for driving anut to go up and down. The cup holder is fixedly connected with the nut. The driving lifting mechanism is used for driving the driven lifting mechanism. The cup holder lifter has the advantages thatthe distance between a water heater and the cup holder is adjusted conveniently, and accordingly, water collection requirements of cup bodies with different heights are met.