To provide a customer information output method for quickly going to a disaster-stricken customer, which enables a user to quickly go to the disaster-stricken customer to quickly perform information collecting activities.

A disaster-stricken region is limited on the basis of earthquake information inputted at each time of the occurrence of an earthquake, and this region is taken as a reference to retrieve customer information accumulated in a customer information database, and customer information corresponding to the limited disaster-stricken region is outputted.