 This study investigated the use of ordinary Portland cement, OPC, as a curing agent for treating desulfurized manganese residue, DMR, which is an industrial solid residue produced during the desulfurization process of electrolytic manganese residue, EMR. OPC was found to improve the flexural strength and compressive strength of the solidified body when mixed with DMR at a ratio of 30% cement to 70% DMR. Additionally, the leaching concentration of MN in the solidified body was reduced from 2.8 mg per liter to 0.06 mg per liter after mixing with OPC. This indicates that OPC can be used as a safe and effective method for treating DMR. This article was authored by Cherqing Wang, Feng Wang, Jialing Che, and others.