This study aims to investigate the relationship among TAM, relationship quality, customer loyalty and customer’ characteristics from the integration of online and offline perspective in Taichung City. TAM was the independent variables, and customer loyalty was dependent variables, and relationship quality as mediator for this study. The research results shows as follows: (1) There are some customer’ characteristics was significant found within TAM, relationship quality, and customer loyalty. (2) There would be a positive influence of TAM on relationship quality and customer loyalty. (3) There would be a positive influence of relationship quality on customer loyalty. (4) Relationship quality as mediator between TAM and customer loyalty.