[Introduction]With the rapid development of the domestic car market,the demand for painted spare parts is rising rapidly.The original equipment manufacturer(OEM)has an urgent need for increasing the production capacity of painted spare parts.In the case of continuous production increase without outsourcing,the management,technology,and equipment needs to be continuously optimized based on the current situation to meet the demand for capacity increase at the minimum cost.[Method]The countermeasures and some improvement schemes for the painting of spare parts were analyzed.[Result]In terms of management,the standardized man hour management was implemented,and the number of personnel ratio needed for each procedure was calculated through the man hour requirement,which improves the processing efficiency of personnel.In terms of technology,if the proportion of the parts to be painted cannot be adjusted via logistics delivery,an internal circular track should be added to avoid the congestion of the production line.[Conclusion]After the implementation of the said optimization measures,the painting of spare parts can be carried out in an orderly and stable manner,reducing costs and meeting market demands.