A store management system executes store operations, employing a communication apparatus In the store, connected with at least one store terminal by way of a first line Inside the store and connected with a server by a second line outside the store. The communication apparatus judges the operation type of each operation request sent from the store terminal and, when the operation type is a first operation, processes the operation request and, when the operation type is a second operation, transmits the operation request to the server so that the server processes the operation request