The utility model discloses a soil-accumulation-preventing picking device for a peanut combine. The soil-accumulation-preventing picking device comprises main shafts which are arranged on a machine frame in parallel in a pairing mode, have the opposite rotating directions and are respectively sleeved with a picking roller, each picking roller is evenly and circumferentially provided with picking blades which extend in the axial direction of the corresponding picking roller, the picking blades on the two picking rollers are arranged in a mutually staggered mode, a thin flexible plate is laid on the position, between every two adjacent picking blades, of the circumferential surface of the corresponding picking roller, one end of each thin flexible plate is connected to the bottom of the corresponding picking blade, and the other end of each thin flexible plate is in lap joint with the bottom of another corresponding picking blade in a covering mode. The soil-accumulation-preventing picking device is reasonable and compact in designed structure, capable of effectively preventing soil accumulation, guaranteeing that the peanut combine achieves the picking function, prolonging service life of the peanut combine and improving work efficiency of the peanut combine.