During the Christmas period which is a celebrating time, the demand of goods will rapidly increase because people seem to be more willing to spend their money on goods and services easier than other seasons which causes higher competitiveness in retail business. In order to keep existing customers and attract new customers to use online shopping, building up the trustiness is very important. As a matter of fact, people who decide to do online-shopping give priority to brand’s reliability, convenience and uncomplicated system of payment and delivery. Especially during this peak period, purchasing orders will be made more than normal period, so informing the correct information, quick responding to customers’ requests and zero error of system are key points to impress customers. If the system is not consistent, details on the web is not updated and the payment channel and delivery are not convenient for customers, customers may get frustrated and there is a possibility that they may switch from shopping at your store to your rivals because your processes do not facilitate them as much as they expect or still below standard. This problem could generate negative word of mouth which finally leads to damage brand image.