The analysis of consumers' food buying behavior using scanner data is increasing. This paper explains scanner data and examines previous studies. The previous studies are classified into five groups according to the contents of analysis. 1) The analysis of competitive relationship between goods. 2) The analysis of the relationship between information and selection of goods. 3) The analysis of the relationship between consumption experience and selection of goods. 4) The analysis of the relationship between goods attribute and selection of goods. 5) The analysis of consumer loyalty to farmer.
In addition, using scanner data of the direct sales store of agricultural products, we analyze the relationship between consumer loyalty and quality of goods. It is concluded that consumers tend to build loyalty to the farmer whose goods are few below consumers' expectations of quality.