This paper discusses the interaction relationship between the retailer's attitudinal commitment and the supplier's use of power. The conceptual model and hypotheses are tested by factor analysis and structural equation model using data gathered through the survey to 346 retailer-supplier relationships in the context of household appliances. The findings show that the supplier's use of mediated power is positively related to the retailer's calculative commitment and negatively related to the retailer's loyalty commitment; while the supplier's use of nonmediated power is positively related to the retailer's loyalty commitment. At the same time, the retailer's calculative commitment will increase the supplier's use of mediated and nonmediated power; while the retailer's loyalty commitment will reduce the supplier's use of mediated power, and increase the supplier's use of nonmediated power.