sidual carbon in the gasification slag developed pore structure and large specific surface area, which had the potential to prepare activated carbon and other high value-added carbon materials, and the full utilization of residual carbon could realize the sustainable use of carbon resources. After obtaining high quality separated carbon by water-mediated gravity separation, gasification residue-based desulfurization activated coke was prepared by coal blending method based on gasification residue separated carbon, which could realize the high value-added utilization of gasification residue. The effects of coal type, coal ratio, carbonization and activation process conditions on thestructure and performance of desulfurization activated coke under the condition of high mixing ratio of gasification residue separated carbonwas investigated by one-way and orthogonal experiments respectively. The study showed that the optimal coal composition of activated cokefor gasification residue separated carbon at a blending ratio of 50% was 29% coking coal, 8% long-flame coal, and 13% coal pitch; Theoptimal carbonization conditions were as follows: heating rate of 5 ℃ / min, carbonization temperature of 700 ℃ and carbonization time of30 min; The optimal activation conditions were: activation temperature 900 ℃ , heating rate 8 ℃ / min, activation time 120 min, activatedwater volume 1.0 mL/ (g·h). Evaluation of desulphurisation and regeneration performance of gasified slag-based desulphurisation activated coke using a fixed-bed reaction unit. Under the optimal formulation and process conditions, the desulfurization activated coke preparedin the kilogram experiments had an abrasion strength of 97.26%, a compressive strength of 696.3 N(measured value), an ash content of11.66%, an iodine adsorption value of 378.78 mg/ g, and a desulfurization value of 28.5 mg/ g, which meet the requirements for desulfurization of coal particles. Technical specifications of A-type good grade of coal granular activated carbon for desulphurisation was satisfedand regeneration performance was good. The preparation of desulfurisation activated coke using gasification residue separated carbonas carbon source significantly reduces the production cost of activated coke, and at the same time provides a feasible way for the high valueutilisation of gasification residue, which is of great significance for the reduction, resourcing and high value utilisation of gasification residue.