The invention relates to a lifter, in particular to a rain grate lifter. With the rain grate lifter, people can lift a rain grate more easily, and place the rain grate back in place conveniently, andthe rain grate lifter saves labor. According to the technical scheme, the rain grate lifter comprises a bottom plate, wheels, an arc-shaped frame, a bearing seat, a rotating shaft, a supporting plate,a rotating rod, a ratchet wheel, a swing rod, a holding rod, an n-shaped rod, a transverse plate, a first movable rod, a clamping device and the like; the wheels are symmetrically arranged on the left side and the right side of the bottom of the bottom plate; the arc-shaped frame is arranged in the middle of the top of the bottom plate; and the bearing seat is embedded in the middle of the outerside surface of the arc-shaped frame. According to the rain grate lifter, clamping blocks penetrates through holes of the rain grate to clamp the rain grate, the left part of a swing rod is pulled toswing downwards, then the clamping blocks are capable of moving upwards to lift the rain grate, and the rain grate does not need to be lifted directly with hands, so that the operation is easier and requires less effort, and the rain grate is more convenient to place back.