The invention discloses a formed pile recycling method for a steel pipe slope protection pile. The formed pile recycling method comprises the following steps that a concrete wall protecting pipe and aPVC wall protecting pipe are distributed in a set pile hole, a retaining wall is formed inside the pile hole, the pile hole can be prevented from collapsing when the steel pipe slope protection pileis hoisted, meanwhile the surrounding stratum pressure can be well resisted in the process of pulling out a steel pipe, and the stratum loss is reduced; and cement slurry is poured into a gap betweenthe steel pipe slope protection pipe and the wall protecting pipe, the poured cement slurry can form a cement rock wall after hardening in the wall protecting pipe, and the effects that the wall protecting pipe is thickened and is in complete contact with the steel pipe slope protection pile so that the cement rock wall can be work together with the steel pipe slope protection pile, the surrounding stratum pressure is resisted, and the stratum loss is reduced are realized. By the adoption of the method, the bonding resistance between the steel pipe pile and cement stones during the pulling-outprocess of the steel pipe slope protection pile can be reduced, the pulling-out process is more smooth, meanwhile the effect of causing the fatigue damage to the cement stones outside the steel pipeis realized, the wall protecting pipe is prevented from moving up along with the steel pipe slope protection pile during the pulling-out process, and the deformation of a surrounding building is reduced.