A medical-information providing system includes an electronic medical record system configured to accumulate medical-record information about patients; a medical device system configured to accumulate operation logs of medical devices; and a computer configured to provide medical-activity-related information from the medical-record information and the operation logs. The computer includes at least one processor configured to: acquire the medical-record information from the electronic medical record system; calculate a first parameter of a first medical activity corresponding to the acquired medical-record information on the basis of the acquired medical-record information; acquire the operation logs from the medical device system; calculate a second parameter of the medical devices used in the first medical activity on the basis of the acquired operation logs; identify a second medical activity involving parameters similar to the calculated first and second parameters; and generate the medical-activity-related information on the basis of the identified second medical activity.