Traditional engineering materials often face the dilemma of “high maintenance and low efficiency,” and the advent of plastic steel sheet piles has effectively solved this problem. Using polymer composite materials as a base and incorporating fiber reinforcement technology, they retain the support properties of traditional materials while achieving comprehensive performance upgrades. Unlike rust-prone steel sheet piles, plastic-steel sheet piles require no anti-corrosion treatment, eliminating annual maintenance costs. Compared to bulky concrete piles, they enable modular installation that can be handled by a single operator, making them particularly suitable for construction in confined spaces.