From the statistical data of World Tourism Organization on the number and average growth of travelers and the travel income, Asia-Pacific Region presents the best potential in tourism markets. A lot of visitors would choose to receive information through Word-of-Mouth when planning a tour. The Word-of-Mouth experiences and shared information could induce a visitor’s travel demands. It therefore becomes a primary issue for the marketing in tourism industry to understand the function of Word-of-Mouth on a visitor’s trust and employment of a tourism business brand. Taking EasyTravel as the research subject, the questionnaire survey is preceded through e-mails. With convenience sampling, total 1000 copies of questionnaires are distributed to the web members of EasyTravel, and 382 valid copies are retrieved, with the retrieval rate 38%. The research results show the significantly positive correlations between 1.Word-of-Mouth and Brand Reliability in Brand Trust and 2.Word-of-Mouth and Brand Intention in Brand Trust; besides, 3.demographic variables reveal remarkable effects on the correlations between Word-of-Mouth and Brand Trust.