Abstract: Aiming at the intensified risk of coal spontaneous combustion under long-cycle and large-volume stockpile conditions in strategic supply-guaranteeing coal storage and distribution bases, and leveraging the operational experience of the Feikuang (Taihui) 1 Mt-class base, this study systemized and refined the engineering expertise of the “six-step method”. By aligning the four-stage evolution mechanism of coal spontaneous combustion with the specific stockpiling characteristics of the base, the quantitative parameters and activation criteria for each operational step were systematically re-engineered. Consequently, a closed-loop prevention and control framework comprising “layered compaction – slime sealing – spray curing – monitoring & control – high-temperature stripping – pile turning and restacking” was established. During a storage cycle with a maximum duration of 13 months and an average of 11.28 months, the base successfully achieved a “zero spontaneous combustion, zero accident” safety record. The peak monitored temperature within the coal piles was 76.8 ℃, remaining safely below the critical early-warning threshold of 80 ℃. Furthermore, quality audits of incoming versus outgoing coal demonstrated that fluctuations in total moisture, calorific value, and ash content were strictly confined within a 5% margin. Featuring well-defined parameters and clear decision-making criteria, this closed-loop prevention and control system is highly replicable and provides a valuable engineering reference for similar industrial bases.