There are benefit conflicts between manufactures and retailers in the channel relationships. Facing dominant retailers, manufacturers are in weakness; vice versa. The analysis is based on the following two prerequisites; (1) retail costs from retailers would show their symmetry or asymmetry in different periods; (2) dominant retailer fixes a wholesale price while weak retailers would accept this price. Direct - viewing graph and mathematical model were employed to analyze the actions of manufacturers from two strategies, pricing and promotion strategies, and how the manufacturers maximize their own benefits by using these two strategies were discussed. From complete opening to retail shops in China, whether the benefits of retailers would be improved effectively by using the two strategies were discussed when the retail costs are asymmetric, and some revelations to opening to our retail businesses were presented.