The invention discloses an assembled connecting structure of a steel pipe concrete pile and a reinforced concrete beam. The assembled connecting structure comprises a steel pipe concrete pile, a reinforced concrete beam, a beam supporting part and a pre-buried section bar, wherein the steel pipe concrete pile comprises a bottom steel pipe, at least one unit steel pipe, a loading plate and a drill;external threads are arranged on the outer walls of the tops of the bottom steel pipe and the unit steel pipe, separately, and internal threads are arranged on the inner walls of the bottoms, separately; spirally winding threaded blades are welded to positions between the external threads and the internal threads on the outer walls of the bottom steel pipe and the unit steel pipe, separately; thebeam supporting part is connected to the external thread of the top of the uppermost unit steel pipe through a threaded groove; the pre-buried section bar is pre-buried in the reinforced concrete beam; and an accommodating groove for accommodating the reinforced concrete beam is formed in the top of the beam supporting part. The concrete pile can be smoothly and rotatably driven into the ground in sections, and meanwhile, the reinforced concrete beam is simply and firmly connected.