The present invention relates to eco-friendly recycling foundation soil for preventing contraction and subsidence, wherein the eco-friendly recycling foundation soil is produced by the following: a mineral material sorting treatment step in which a mineral material of less than 1 cm is sorted from mineral materials used in a blasting process on a shipbuilding industrial site by using a drum-type sorting device having a screen net, the sorted mineral material is moved to a moving belt and stored in a predetermined space, and metal materials and nonmetallic materials of 1 cm or more remaining inside the drum-type sorting device are moved to a moving belt to be sorted; a dust treatment step in which dust generated from the blasting process on the shipbuilding industrial site is collected, and after sorting out the metal materials having acceptable purity and removing combustible materials within the dust by heat treatment at high temperatures, the dust is stored in a silo; a process sludge treatment step in which process sludge generated from the blasting process on the shipbuilding industrial site is collected, dried, and sorted prior to a ship painting process; and a red clay treatment step in which red clay is pulverized and processed to powder of 70-140 mesh. The eco-friendly recycling foundation soil is formed by mixing the mineral material, dust, sludge, and red clay thus obtained from the aforementioned processes, and more specifically, by mixing 80-90 wt% of the mineral material, 2-5 wt% of a mixture of the dust and the sludge, and 8-15 wt% of the red clay.
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