A medical record information disclosure system includes a medical record information server for storing medical record information of patients, a policy information setting portion for setting policy information indicating an attribution of a medical expert who can see contents of medical record information for each medical record information, an authority system for setting authority information for certifying an attribution of a medical expert for each of the medical experts, a disclosure permissibility decision portion for deciding whether it is permissible or not to disclose contents of the medical record information to the medical expert by comparing the authority information of the medical expert with the policy information set in the medical record information, and a medical record information output portion for delivering the medical record information to the medical expert when it is decided the disclosure of contents of the medical record information to the medical expert is permissible.