Hedge trimmer

The hedge trimmer comprises the overturning device, the supporting frame, the lifting frame and the trimming knife, the working state and the idle device of the trimming knife are controlled through the overturning device, the trimming knife is adjusted to the top of the lifting platform in the non-working state, collision is avoided, workers are prevented from being hurt, meanwhile, maintenance is convenient, and in the working state, the trimming knife is not damaged. By means of constant-speed or differential-speed movement of the two lead screws, horizontal and rotary movement of the trimming knife is achieved, green plants can be trimmed at various angles, the trimming difficulty is greatly reduced, secondly, the height of the working state of the trimming knife can be adjusted and controlled through the lifting frame, the modification range is widened, and the trimming efficiency is improved. According to the device, all parts are controlled through a plurality of motors, the operation difficulty of the