Meal menu data suitable for each patient is created as a combination of a plurality of types of meal according to the symptom, actual condition, or preference and provided to the patient or alliance restaurants. An information processing system for meal management comprises medical institution network servers interconnected through a bidirectional information communication network, restaurant servers, patient data processors, and a center server. The center server includes meal restriction information storage means for storing meal restriction information created according to electronic medical record information on each patient provided from the medical institution network server for each patient ID number, means for creating meal menu information served in the restaurants corresponding to the electronic medical record information or the meal restriction information on the patient according to the meal restriction information for each patient ID number and means for distributing the meal menu information to the restaurant servers and the patient data processors through the bidirectional information communication network.