To achieve a closed-loop supply chain coordination, this paper uses the theory of optimal incentive to study this problem. In the product and retail section, the manufacturer offered the retailer optimal retail price incentive contract. And in the reverse recycle section, it offers the recycler optimal recycle effort incentive contract. The result shows that the optimal retail price incentive contract can achieve closed-loop supply chain coordination in the product and sale section. The optimal recycle effort incentive contract can coordinate the reverse recycle part of the closed-loop supply ...