As the offshore wind power industry grows rapidly, more wind turbines are reaching the maintenance phase. A major challenge during this phase is preventing and controlling the expansion of scour pits around turbine foundations, as well as effectively restoring these areas. Traditional scour protection methods often rely on high-quality, non-renewable materials like riprap, which are becoming increasingly scarce and expensive. In contrast, dredged soil, a byproduct of routine port and waterway maintenance, is widely available and cost-effective. Using dredged clay as a protective backfill offers an innovative and sustainable solution, aligning with efficient waste resource management. By adding solidifying agents, the treated soil gains improved load-bearing capacity, stability, and other engineering properties, outperforming traditional scour protection methods. However, before hardening, the soil is highly prone to erosion, making the study of its early anti-scour properties critical for evaluating protective performance. To address this gap, this study investigates the anti-scour performance of solidified dredged soil through the erosion function apparatus. The critical incipient velocity of the soil was measured under different admixture ratios and curing ages. Based on the test results, the anti-scour mechanisms of the soil were analyzed, providing insights into its long-term effectiveness.