Abstract: To investigate the impact of government regulations on closed-loop supply chain decisions for electrical and electronic equipments with different collection channels, three closedloop supply chain decision models with the manufacturer, the retailer, or third party collecting waste electrical and electronic equipment (WEEE) were developed respectively with or without government regulations. Based on game analysis method, optimal government regulation policy tools, operation strategies and profits of CLSC members and social welfare are obtained. By comparing the optimal strategies and profits of CLSC members with or without government regulations, it is found that whether with government regulations or not, the manufacturer collecting WEEE is the best for itself as long as the unit collection cost of manufacturer is not much high, or else the manufacturer should outsource the collection work to the retailer. In addition, both the retailer and the thirdparty want to collect WEEE. Finally, under government regulations, the retailer collecting WEEE is the best for the whole society.

Key words:  waste electrical and electronic equipment（WEEE）, closedloop supply chain（CLSC）, government regulations, collection channel