The invention discloses a high branch saw handle mechanism, which comprises a primary handle and a secondary handle, wherein the rear end of the primary handle is rotationally connected with the rear end of the secondary handle; the middle part of the primary handle is fixed with one end of a handle adjusting plate; the other end of the handle adjusting plate is penetratively arranged at the front end of the secondary handle and can slide in the secondary handle; and the front end of the secondary handle is provided with a locking device for locking the handle adjusting plate. In the invention, the primary handle is rotationally connected with the secondary handle, so the angle between the primary handle and the secondary handle can be adjusted, the operating difficulty is reduced, and the handles are operated more comfortably. When a handle pressure plate is opened, the secondary handle can rotate freely relative to the primary handle; when the handle pressure plate is pressed down, the handles can be locked; and the locking device has a simple structure, and is convenient to operate.