The utility model provides a labor -saving high -branch trimmer, including support arm, swing arm, reset spring, stay cord, the support arm anterior segment is equipped with the cutting edge, the swing arm articulates on the support arm, the connecting rod articulates the one end in the swing arm, the swing arm other end is for moving the sword, the blade that moves the sword is relative with thecutting edge, the connecting rod tip is equipped with first pulley yoke, be equipped with the second pulley yoke on the support arm, reset spring one end is connected on the connecting rod, and the other end is connected on the support arm, the support arm is continuous cambered surface with the contact surface of connecting rod, the support arm bottom is equipped with the handle. The utility model discloses aim at providing a labor -saving high -branch trimmer, it is laborsaving when making the pruning, can cut thicker branch to simple structure, low cost.本新型係由支臂、擺臂、連桿、復位彈簧及拉繩組成。支臂具有刀刃、靠模部及定滑輪，而擺臂係透過第一樞部而鉸接於支臂，且於擺臂一端設有能與刀刃進行剪切之動刀，連桿係透過第二樞部而鉸接於擺臂另端，此連桿一端設有隨動部、另端安裝有動滑輪，復位彈簧係安裝於支臂與連桿之間，俾促動隨動部定位於靠模部，用以使刀刃、動刀保持張開；前述拉繩一端固定在支臂，然後繞過動滑輪、定滑輪，在牽引動滑輪下移時，令隨動部能沿著靠模部下移而轉換槓桿支點，用以作用動刀、刀刃省力剪切。
