Abstract: To address challenges related to the high cost and suboptimal physical and mechanical properties of high-water content materials, this study selected low-grade sulfoaluminate cement clinker as the primary raw material. Through physical experiments, it investigated the physical and mechanical behaviors of high-water materials prepared from low-grade sulfoaluminate cement clinker under varying conditions of admixture dosage, waterto-cement ratio, and water temperature. Process experiments further assessed the efficacy of these materials in practical applications. The findings revealed: (1) Variations in the physical and mechanical properties of highwater materials under different conditions are primarily due to the affected rate and quantity of ettringite formation. (2) Utilizing low-grade sulfoaluminate cement clinker as the raw material and adding specific admixtures significantly improved the appearance and strength of the high-water materials. (3) Reducing the water-to-cement ratio markedly enhanced both the early and peak strengths of the high-water materials, with an average strength decrease of about 11% for every 0.1 increase in the ratio. (4) Water temperature more significantly influenced the initial setting time than the final setting time of high-water materials and positively affected early strength, with a 2 ℃ increase in temperature resulting in approximately a 6.8% strength increase after one day. (5) The order of factors affecting the strength of high-water materials was admixture > water-to-cement ratio > water temperature.(6) The field application of high-water materials made from low-grade sulfoaluminate cement clinker resulted in minimal roadway deformation, achieving satisfactory airfilling outcomes.