Nursery stock puller

The invention discloses a nursery stock puller. The upper end and the lower end of a longitudinally-arranged supporting frame are connected with an upper cross beam and a lower cross beam which are horizontally arranged respectively, a supporting plate is installed at the free end of the lower cross beam, and a movable arm perpendicular to the upper cross beam is installed at the free end of the upper cross beam; the upper end of the supporting frame is movably connected with the upper cross beam; a clamping set comprises a movable clamping plate and a fixed clamping plate; the movable clamping plate is installed at the lower end of the movable arm; the side surface of the lower end of the supporting frame is further fixedly connected with the fixed clamping plate matched with the movableclamping plate; an arc-shaped slideway is arranged on the lower cross beam; and a limiting shaft penetrating through the movable clamping plate is arranged in the arc-shaped slideway and is in slidingfit with the arc-shaped s