The invention relates to the technical field of stump removing, in particular to a device for removing withered stumps for tree planting. The device for removing withered stumps for tree planting comprises a vehicle body and a telescopic clamping mechanism. The telescopic clamping mechanism comprises a door-shaped frame, first hydraulic oil cylinders, hanging rods, second hydraulic oil cylinders,sliding rods and clamping tools, the door-shaped frame is fixedly connected to one side of the vehicle body, one sides of the first hydraulic oil cylinders are fixedly connected to an inner side wallof the door-shaped frame, output ends of the first hydraulic oil cylinders are fixedly connected with one sides of the hanging rods, top parts of the hanging rods are slidably connected with a top part of the door-shaped frame, top parts of the second hydraulic oil cylinders are fixedly connected to inner top parts of the hanging rods, and output ends of the second hydraulic oil cylinders are fixedly connected with top parts of the sliding rods. The device can be adjusted according to sizes of withered stumps, extends into the ground, increases a contact area with the withered stumps, furtherimproves a clamping stability, and improves a removing effect of the withered stumps.