利用經濟理論以及分析網路資源數量與價錢的關係，提供網路供應者，可以依據目前網路壅塞的情形，讓網路使用者可以彈性選擇個人化網路服務等級，動態保證網路使用者的網路服務品質，透過經濟效益分析，構思出定價策略來保障使用者最大利益，供應者最大收益和社會最大福利。在差異性服務環境下，我們不僅支援多種網路服務等級而且允許網路使用者動態選擇適當網路資源，實驗結果顯示我們的定價方法提供網路服務等級及增加網路供應者的利潤。 / By adopting an appropriate economics theory and analyzing a close connection between quantity and price, we enable network service providers to react instantaneously to network congestions and to provide customers with high flexibility in service class selection. Economic efficiency is well established in pricing strategies to maximize customers’ net benefit, provider’s surplus and social welfare. To achieve this goal, we propose a hybrid pricing strategy which not only supports multiple QoS classes but also allows customers to make personal QoS class selections in Differentiated Service networks. Simulation results show that our pricing strategy can support customer QoS and increase ISP revenue.