The utility model discloses a shear type pruning and stumping device comprising two toothed cutters and a power-driven system. The toothed cutters are vertically or laterally parallel to each other, a row of cutter teeth are distributed on a side edge of each toothed cutter, and the zigzag-shaped toothed cutter is formed. The cutter teeth of the toothed cutters correspond one by one, and the toothed cutters relatively move along the cutter teeth arrangement direction and are integrated with each other through a guide structure. One toothed cutter is a fixed one, and the other toothed cutter is a movable one. The power-driven system comprises a hydraulic motor, a reducing mechanism and a transmission mechanism. The hydraulic motor and the reducing mechanism are fixed on the fixed toothed cutter. The transmission mechanism which is connected with the reducing mechanism is connected with the movable toothed cutter and allows the movable toothed cutter to move relative to the fixed toothed cutter, leading to shearing. The shear type pruning and stumping device is applicable to arbor pruning and shrub stumping, high in shearing efficiency, simple and reliable in structure and suitable to various operation environments and manners.