There is provided a medical observation apparatus including: a determination section configured to determine, on a basis of distance between a part corresponding to a sterile region and an object existing in a periphery of the part corresponding to the sterile region, if an approaching state in which an object is approaching the part corresponding to the sterile region exists； and a notification control section configured to cause a notification of the approaching state to be issued, on a basis of a determination result of the approaching state.
