The utility model discloses a segmented pile hole retaining wall which comprises a retaining wall cylinder assembly, and the retaining wall cylinder assembly comprises a plurality of cylinder bodies and connecting rods. Wherein the barrel is vertically arranged, an annular bottom boss is arranged on the bottom surface of the barrel, a bottom rod penetrating hole is formed in the side wall of the bottom boss, the axis of the bottom rod penetrating hole is perpendicular to the axis of the barrel, an annular top boss is arranged at the top of the barrel, a top rod penetrating hole is formed in the side wall of the top boss, and the axis of the top rod penetrating hole is perpendicular to the axis of the barrel; a stop groove is formed in the top surface of the barrel, a plurality of hoistingplates are further arranged on the outer side surface of the top boss, and the circumferential size of the hoisting plates along the axis of the barrel is smaller than the outer diameter of the barrel; the connecting rod is a right-angle rod, and two sections of the right angle are respectively a perforation section and a stop section; the barrel bodies are connected through connecting rods, at the connecting position, the bottom boss and the top boss are embedded and positioned, the axis of the bottom rod penetrating hole coincides with the axis of the top rod penetrating hole, the penetrating section penetrates through the bottom rod penetrating hole and the top rod penetrating hole, and the end of the stop section is located in the stop groove.