The main purpose of this study is to examine the relationship among brand image, sales promotion and purchase intention in Taiwan LCD TV industry. This study use convenience sampling method to collect research samples from the consumer in Tainan area. This study has 183 valid questionnaires and applies factor analysis, reliability analysis, validity analysis and structural equation modeling (SEM)to analyze research hypotheses. The major finding of this study includes: (1) the brand image has significant positive effect on sales promotion; (2) the brand image has significant positive effect on purchase intention; (3) the sales promotion has significant positive effect on purchase intention; and (4) the mediating effects of sales promotion towards the understanding of brand image has significant positive effect on purchase intention.