The utility model relates to a copying traction system of a peanut seeder, which includes a copying mechanism used for connecting a traction frame and a seeder body of the peanut seeder, and a copying device arranged between the traction frame and the seeder body, wherein the copying mechanism includes connecting bars, fixing vertical bars and springs hung on the fixing vertical bars, and the connecting bars and the fixing vertical bars are connected through pin shafts; the fixing vertical bars are fixed on the traction frame and the seeder body, and are provided with round holes allowing hooks of the springs to pass through; one end of each spring is hung at the upper part of one fixing vertical bar, and the other end is hung at the bottom of the adjacent fixing vertical bar; and the copying device includes a traction bar, a support bar, and a spring around the periphery of the support bar, the upper part of the support bar passes through the top end of the traction frame and is fixed by a bolt, and the lower part is connected with the seeder body through a pin shaft. The copying traction system has the advantages of stable burying stroke, compact structure of the whole seeder, strong copying property and the like. The copying traction system can be suitable for seeding processes in work on sloping fields and complicated fields, ensures that peanut seeds are buried in the oil at the same depth, and avoids the influence on the peanut yield.