The invention discloses a lifting type wave energy power generation device. The device comprises a fixed long rod, a first fixed ring, a second fixed ring, a fixed guide rod, a movable ring, a power generation gear, a gear seat, a rack and a floater, wherein the first fixed ring and the second fixed ring are fixed to the fixed long rod, and the two ends of the fixed guide rod are fixed to the first fixed ring and the second fixed ring respectively; the floater sleeves the fixed long rod, and the fixed guide rod penetrates through a through hole in the floater; the movable ring movably sleevesthe fixed long rod, one end of the rack is fixedly connected with the movable ring, the other end of the rack is fixed to the floater, and the rack is parallel to the fixed long rod; and the power generation gear is meshed with the rack. A reciprocating motion mechanism composed of the floater, the gear and the power generation rack makes the wave energy absorption efficiency high, the efficiencyof converting wave energy into power is also high, and the power generation gear can be conveniently used for continuously driving a generator to rotate back and forth to generate continuous electricenergy.