The purpose of the study is to investigate the effect of key factors of brand loyalty in farmers market. In the study, samples were drawn from the Taipei Flower Expo Farmers Market and Hope Plaza Farmers Market, and 305 physical questionnaires were sent out. Afte Invalid questionnaires are removed, a total of 289 valid questionnaires were collected as research samples, and the response rate was 94.75%. After statistical analysis, the results of this study are as follows. First, Different types of perceived value have different effects on brand loyalty, while the impact of rational factors of perceived value on brand loyalty is greater than that of emotional factors. Second, the consumption situation positively affects the brand loyalty of the farmer's market through customer satisfaction as an intermediary factor. Based on the above research results, there are several suggestions provided for future researchers.