The invention relates to the technical field of curtain accessories, and discloses a curtain hanging device realizing easy rise and fall of a hanging rod. The deice comprises a sliding rail, a fixed base is movably connected to the upper end of the sliding rail, a connecting block is movably connected to the inner wall of the sliding rail, a pull rod is movably connected to the outer side of the connecting block, a sliding plate is movably connected to one end, far away from the connecting block, of the pull rod, a spring is movably connected to one side, far away from the pull rod, of the sliding plate, a sliding chute is movably connected to the bottom end of the spring, a fixing block is movably connected to the bottom end of the sliding chute, the curtain hanging rod is movably connected to the lower end of the fixing block, and hooks are movably connected in the curtain hanging rod. For the curtain hanging device realizing easy rise and fall of the hanging rod, through the matcheduse of the structures including the pull rods, the sliding plates, the sliding chutes, the fixing blocks and the like, the curtain hanging rod can move vertically, and through the matched use of a pull rope, a round block, a rolling wheel, a slider and the like, the effect that the operation is simple is achieved.