The invention discloses a graphene modified energy pile, and relates to the technical field of ground source heat pumps and pile foundations. The graphene modified energy pile comprises a pile body poured by a graphene and concrete mixture, and a hole is formed in the inner center of the pile body; a spiral pipe-shaped heat transfer pipe is arranged in the hole in the pile body, and the bottom ofthe heat transfer pipe is connected with a return pipe; the positions between the interior of the pile body and the heat transfer pipe as well as between the interior of the pile body and the return pipe are fully filled with filler, and the middle sections of the heat transfer pipe and the return pipe are bound on a reinforcement cage; heat conducting liquid is loaded in the heat transfer pipe and the return pipe, and a pile cap is arranged at the top of the pile body in a sealed mode; the heat transfer pipe and the return pipe vertically extend out of the pile cap, and ports, outside the pile cap, of the heat transfer pipe and the return pipe communicate through a connecting pipe and a heat collector; and the return pipe is connected with a geothermal pump. According to the graphene modified energy pile, the heat transfer pipe is designed into the spiral type to be fixed into the pile body, the return pipe is designed, thus the contact area between the heat transfer pipe and the filler can be effectively increased, and the heat transfer capacity of the pile body is improved.