Considering the collection effort and the quality of recycled products, based on the Stackelberg game theory, this paper constructs three different channel decision models in remanufacturing closed-loop supply chain, which are manufacturer collecting, retailer collecting and third party(3P) collecting. By the models, the differences of the optimal decision-making among channel participants and the recycling channel selection issue are studied. The results show that the third party collecting is the worst equilibrium. In addition, recycling by manufacturers or retailers depends on the cost savings level of remanufacturing. Therefore, the manufacturers should choose the best recycling channel from manufacturer collecting and retailer collecting by measuring the cost of remanufacturing.