Abstract: Considering the pressing issues of excessive emissions and inadequate emission reduction management in the OEM industry,a green emission reduction OEM model and an ODM model with shared emission reduction costs are established to explore practical pathways for concurrently achieving economic development and green production.This paper compares the economic and environmental performance of these two models, focusing on how changes in key factors affect the optimal decision-making of participating firms.The results show that the ODM model with cost-sharing achieves higher optimal emission reduction levels. As green production levels improve, the economic benefits of the cost-sharing ODM model become increasingly pronounced, encouraging a shift towards greener outsourcing structures. However, considering the rising costs associated with green technology innovation, firms may prioritize economic benefits at the expense of effective emission reduction. Therefore, the technological innovation is critical.