The invention relates to a reinforced concrete articulated cylindrical filling pile, which comprises an inner steel die pipe, an outer steel die pipe and a sealing pile shoe thereof. The top ends of the inner steel die pipe and the outer steel die pipe are welded with a steel plate respectively jointed with an inner pipe screw and an outer pipe screw by pins, the upper orifice of the inner steel die pipe is provided with an incline sealing plate with a soil outlet hole, the top of the outer steel die pipe is provided with a top plate of which upper part is provided with a vibration hammer, the periphery of the top plate is provided with an inner notch and an outer notch corresponding to the inner screw and the outer screw, the upper orifices of the inner steel die pipe and the outer steeldie pipe are provided with a pipe wall groove for traversing a soil discharge pipe respectively, the bottom of the outer steel die pipe has a closed convex edge, and the bottom of the convex edge andthe bottoms of the inner steel die pipe and the outer steel die pipe are sealed by a precast reinforced concrete pile shoe with an annular introduction slop. Pile forming processes comprise: firstly,sinking the inner steel die pipe and the outer steel die pipe into pile sites and discharging soft soil, then unscrewing a locking screw cap to separate the inner pipe screw, the outer pipe screw, the inner steel die pipe and the outer steel die pipe, placing a steel reinforcement cage between the inner steel die pipe and the outer steel die pipe, filling concrete into the steel reinforcement cage, and drawing out the inner steel die pipe and the outer steel die pipe by vibrating to form the reinforced concrete cylindrical filling pile. The filling pile has the advantages that raw materials such as concrete, steel reinforcement and the like are saved, no construction seam exists at the articulated place, the quality is reliable, the work efficiency of construction is high, and the.