As competition among on-line retailers escalates, more services are added to increase shopping convenience, such as free delivery, 24-hour arrival, payment-pickup service in the assigned convenience stores, etc. Many e-commerce researches have included convenience as a critical factor on on-line shopping attitudes and behavior. Although the importance of convenience in on-line shopping (this is abbreviated as e-Convenience) is recognized, very few studies have discussed it in detail. After a review of convenience literature, including physical convenience and e-Convenience, this study proposes a theoretical model to systematically evaluate e-Convenience. We first define e-Convenience with its three constructs relating to the shopping and purchasing process. These are shopping convenience, delivery convenience and post-purchase convenience. The antecedent factors are on-line shopping characteristics, such as one-stop shopping, website design, shopping service, personalized touch, and exhaustive information characteristics. In addition, the dependent factors include satisfaction and loyalty. The discussions in this paper clarify the meaning of e-Convenience and provide further commentary on the role that it plays nowadays on e-shopping.