Cast steel parts, due to their high strength, high toughness, impact resistance and wear resistance, are widely used in heavy industry fields such as metallurgy, mining, construction machinery, power equipment, and rail transportation. Most enterprises only focus on the casting quality of cast steel parts but neglect the subsequent daily maintenance, which leads to problems such as rusting, oxidation, fatigue cracks, surface wear, and deformation failure of the cast parts, significantly shortening their service life and increasing the costs of equipment operation and spare parts replacement. Proper daily maintenance of cast steel parts can effectively stabilize the equipment operation conditions and reduce the failure rate. This article shares practical methods and core points for the daily maintenance of cast steel parts, which is suitable for production and operation personnel to refer to and implement.