Abstract: The present invention aims at providing a technique of helping to quantitatively evaluate a purchasing preference of customers, and design the purchasing preference high in the degree of matching with an actual merchandise purchasing history. The customer analysis system according to the present invention calculates the degree of matching indicative of how much a purchasing preference type of the customer matches a merchandise group in a correspondence relationship on the basis of a merchandise purchasing history of the customer, and evaluates the purchasing preference type on the basis of the calculation result (refer to FIG. 3).