The utility model discloses an effort -saving tree pruning device, including scissors, telescopic joint, small -size flexible propeller, LED light and electric putter, the scissors passes through connecting bolt and installs the inside at elongated panel, elongated panel installs the top at the telescopic joint, electric putter installs on the inner wall of the bottom face of handle, and electricputter's output installs the telescopic link, the telescopic joint is installed on electric putter's the telescopic link, the both ends pole of small -size flexible propeller is installed respectivelyon the outer wall of one side of handle, install automatically controlled spring on the inner wall of the bottom face of telescopic joint, install the LED light on the automatically controlled spring, the internally mounted of LED light both sides telescopic joint has the battery. The utility model discloses install small -size flexible propeller, can close for opening of handle in the work provides some external force, and people are very light can to cut the branch, also can easily cut comparatively laborsavingly to some thick branches.